changelog.yaml

- changes:
    added:
    - Income Tax and National Insurance.
    - All benefits are at least taken from survey reporting (can be switched on-off).
    - Child Benefit is modelled, others such as Income Support, JSA (both types),
      Tax Credits can be simulated/reformed but require more reviewing in how to account
      for discrepancies caused by take-up rates.
    - Four budget-neutral UBI reforms are implemented.
    - 15 test cases (unit and integration) testing benefits and taxes.
    - Simulation helper tools.
  date: 2020-11-08 00:00:00
  version: 0.1.0
- bump: minor
  changes:
    changed:
    - Time periods now appropriate, using an implementation of WEEK for most benefits.
    - MTRs handled properly and include a breakdown.
    - Simulation tools are improved and included in a class.
  date: 2020-12-05 00:00:00
- bump: patch
  changes:
    changed:
    - Improved documentation of parameters.
    - Tests now occur in 2021 to ensure FY20-21 parameters are used.
    fixed:
    - Bug in CB-HITC that caused overestimation.
  date: 2021-04-19 00:00:00
- bump: patch
  changes:
    added:
    - Jupyter-Book documentation.
    - More detailed disability variables.
    fixed:
    - IndividualSim reform handling.
  date: 2021-04-20 00:00:00
- bump: patch
  changes:
    changed:
    - MicroDataFrame and MicroSeries returned by default.
    fixed:
    - Bugs.
  date: 2021-04-21 00:00:00
- bump: minor
  changes:
    added:
    - New interface for microsimulation.
    - Sources in tax logic.
    - Tests.
    changed:
    - Microdata now generated and loaded in-model.
    - Variable time periods made more consistent.
    - Derivative calculations made more efficient and have more options.
  date: 2021-07-04 00:00:00
- bump: minor
  changes:
    added:
    - Tests for variable naming conventions.
    - Postcode lookup optional features available.
    - LHA rates for all BRMA areas added.
    changed:
    - PolicyEngine-UK now runs from the official OpenFisca-Core.
  date: 2021-07-05 00:00:00
- bump: minor
  changes:
    changed:
    - Minor update
  date: 2021-07-05 00:00:00
- bump: minor
  changes:
    changed:
    - Minor update
  date: 2021-07-05 00:00:00
- bump: minor
  changes:
    changed:
    - Minor update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    changed:
    - Patch update
  date: 2021-07-05 00:00:00
- bump: patch
  changes:
    added:
    - Units for some variables.
    changed:
    - Code refactoring.
  date: 2021-12-23 00:00:00
- bump: minor
  changes:
    added:
    - Historical Working Tax Credit parameters since 2002 (previously since 2016).
    - Legislative references for Working Tax Credit parameters.
    changed:
    - Working Tax Credit child care parameters represent the maximum amount, prior
      to the share covered.
    fixed:
    - Apply Working Tax Credit old-age provision to 60-year-olds.
    - Qualify people working 30 hours for the Working Tax Credit.
    - Point afcs to afcs_reported instead of AA_reported.
    - Fix units on some variables.
  date: 2021-12-27 00:00:00
- bump: patch
  changes:
    removed:
    - Benefit unit- and household-level saved random numbers for take-up.
  date: 2021-12-29 00:00:00
- bump: minor
  changes:
    added:
    - Minimum tax credit benefit amount.
  date: 2021-12-29 00:00:01
- bump: patch
  changes:
    added:
    - Microsimulation tests and YAML data for Child Benefit, Tax Credits and Council
      Tax.
    - Documentation page for Tax Credits.
    - Simplified dataset usage to enhanced FRS only.
  date: 2021-12-29 00:00:02
- bump: patch
  changes:
    added:
    - Metadata for the Dividend, Property and Trading Allowances.
  date: 2022-01-07 00:00:00
- bump: minor
  changes:
    added:
    - Parameter representing the Child Tax Credit's child limit.
    changed:
    - Renamed parameter representing Universal Credit's child limit.
  date: 2022-01-07 00:00:01
- bump: patch
  changes:
    changed:
    - Label metadata for tax variables.
  date: 2022-01-08 00:00:00
- bump: patch
  changes:
    changed:
    - Removes the `u` prefix from all variable label strings.
  date: 2022-01-08 00:00:01
- bump: patch
  changes:
    added:
    - Sure Start Maternity Grant (reported).
    changed:
    - Education benefits summed in a formula.
    fixed:
    - Some maternity benefits (SSMG, SMP) and WFA not included in benefits.
  date: 2022-01-12 00:00:00
- bump: patch
  changes:
    changed:
    - PolicyEngine-UK-Data version increased to 0.7.0.
  date: 2022-01-14 00:00:00
- bump: patch
  changes:
    added:
    - When datasets are not available, a prompt is displayed to download them or use
      synthetic data.
    - CLI interface trigger changed from `openfisca-uk-setup` to `openfisca-uk` and
      default years updated.
  date: 2022-01-16 00:00:00
- bump: patch
  changes:
    added:
    - Stocks/flows metadata for PolicyEngine-facing variables.
  date: 2022-01-17 00:00:00
- bump: patch
  changes:
    fixed:
    - Household gross income calculated directly from household benefits and market
      income.
    - Savings allowance was previously set to zero erroneously for households in Scotland
      at the starter or intermediate bands.
  date: 2022-01-17 00:00:01
- bump: patch
  changes:
    added:
    - Metadata (period, unit, name, label) for all Universal Credit parameters.
  date: 2022-01-18 00:00:00
- bump: patch
  changes:
    fixed:
    - Baseline HBAI-excluded income variable now uses the Synthetic FRS when the enhanced
      FRS is not available.
  date: 2022-01-22 00:00:00
- bump: patch
  changes:
    added:
    - Unit test for benefit unit rent.
    changed:
    - OpenFisca-Tools dependency patch increased.
  date: 2022-01-22 00:00:01
- bump: minor
  changes:
    added:
    - Re-weighting routine for the Family Resources Survey, matching aggregates, participation
      and populations.
  date: 2022-02-04 00:00:00
- bump: minor
  changes:
    added:
    - The Energy Bills Rebate scheme.
  date: 2022-02-06 00:00:00
- bump: patch
  changes:
    changed:
    - OpenFisca-Tools bumped to v0.3
  date: 2022-02-14 00:00:00
- bump: patch
  changes:
    added:
    - Basic income parameters and logic.
  date: 2022-02-14 00:00:01
- bump: patch
  changes:
    changed:
    - Set basic income phaseout threshold default to 0.
  date: 2022-02-14 00:00:02
- bump: patch
  changes:
    added:
    - Historical carbon emissions parameter.
  date: 2022-02-25 00:00:00
- bump: minor
  changes:
    added:
    - Pensioner exemption switch for Income Tax rate and threshold reforms.
  date: 2022-02-28 00:00:00
- bump: minor
  changes:
    changed:
    - Re-weighting procedure formalised with cross-validation and logging.
  date: 2022-02-28 00:00:01
- bump: patch
  changes:
    added:
    - Added a production-based carbon emissions parameter.
  date: 2022-03-04 00:00:00
- bump: patch
  changes:
    changed:
    - Re-weighting procedure improved with consolidated categories and added income
      source targeting.
  date: 2022-03-04 00:00:01
- bump: patch
  changes:
    fixed:
    - Basic income means-test inclusion previously didn't work correctly (when turned
      off) for Housing Benefit and Pension Credit.
  date: 2022-03-08 00:00:00
- bump: patch
  changes: {}
  date: 2022-03-08 00:00:01
- bump: minor
  changes:
    added:
    - 'Forecasting to 2027: new and improved household weights.'
  date: 2022-03-23 00:00:00
- bump: minor
  changes:
    added:
    - 'Forecasting to 2027: new and improved household weights.'
  date: 2022-03-24 00:22:00
- bump: patch
  changes:
    fixed:
    - Pull request merge action didn't correctly update the repo.
  date: 2022-03-24 03:05:39
- bump: patch
  changes:
    fixed:
    - Bugs related to uprating parameters.
  date: 2022-03-24 03:05:39
- bump: minor
  changes:
    added:
    - Tax and benefit changes announced in the 2022 Spring Statement.
    - Inflation and real disposable income.
    - Parameters for PIP, DLA, SDA, AA and Carer's Allowance.
    changed:
    - Added calibration make.
  date: 2022-03-27 14:13:20
- bump: minor
  changes:
    fixed:
    - Synthetic FRS now successfully loads.
    - Incorporates better calibration and imputations.
  date: 2022-04-03 19:28:24
- bump: minor
  changes:
    added:
    - Total wealth variable.
  date: 2022-04-05 09:41:35
- bump: patch
  changes:
    fixed:
    - Spring Statement Class 4 NI change correctly follows 2022/23 adjustment.
  date: 2022-04-05 12:28:40
- bump: patch
  changes:
    added:
    - Carbon tax model page added.
  date: 2022-04-05 14:23:50
- bump: patch
  changes:
    fixed:
    - A bug preventing the Synthetic FRS from loading.
  date: 2022-04-07 09:51:58
- bump: patch
  changes:
    added:
    - Carbon emissions (production-based) by industry.
  date: 2022-04-07 10:36:03
- bump: patch
  changes:
    fixed:
    - Chart on carbon intensities.
  date: 2022-04-08 10:35:59
- bump: minor
  changes:
    added:
    - Dataset generation.
  date: 2022-04-14 11:46:45
- bump: patch
  changes:
    fixed:
    - Failed import of policyengine_uk.tools
  date: 2022-04-14 12:36:43
- bump: patch
  changes:
    fixed:
    - Failed imports of reform tools.
  date: 2022-04-14 12:48:06
- bump: patch
  changes:
    fixed:
    - MANIFEST.in file re-added (caused previous two issues).
  date: 2022-04-14 13:10:26
- bump: patch
  changes:
    fixed:
    - Land and carbon are calculated based off UK-wide statistics, not in-model statistics.
  date: 2022-04-22 21:26:10
- bump: minor
  changes:
    changed:
    - Pension Credit code quality improvements.
    fixed:
    - Pension Credit missing disability elements.
  date: 2022-04-26 12:10:51
- bump: minor
  changes:
    changed:
    - Calibration process improved with country-level targets.
  date: 2022-04-29 09:29:26
- bump: minor
  changes:
    added:
    - Household-level phase-outs for basic income.
  date: 2022-05-16 14:02:26
- bump: patch
  changes:
    fixed:
    - National Insurance thresholds pre-July, post-Spring Statement (inflation adjustments).
  date: 2022-05-19 14:58:06
- bump: patch
  changes:
    changed:
    - Reorganize documentation and variables.
  date: 2022-05-21 16:01:32
- bump: patch
  changes:
    fixed:
    - Baseline variables are now generated before calibration (fixes a bug causing
      overestimation of benefit caseloads).
  date: 2022-05-22 15:27:50
- bump: minor
  changes:
    added:
    - Miscellaneous benefit payment.
  date: 2022-05-26 10:46:43
- bump: minor
  changes:
    added:
    - UK Government cost-of-living support measures.
  date: 2022-05-26 13:04:11
- bump: minor
  changes:
    added:
    - Disability benefits to COL support measures.
  date: 2022-05-26 16:16:50
- bump: patch
  changes:
    added:
    - References for some tax and UC parameters.
  date: 2022-06-05 20:28:29
- bump: minor
  changes:
    added:
    - Dashboard tool for the calibration procedure.
    - Loss components for aggregates in demographic targets.
    fixed:
    - A bug causing Pension Credit to under-react to increases in Income Tax.
  date: 2022-07-25 11:14:58
- bump: minor
  changes:
    added:
    - TV licence fee.
  date: 2022-07-27 10:14:59
- bump: patch
  changes:
    fixed:
    - Round marriage allowance.
  date: 2022-08-25 17:36:23
- bump: minor
  changes:
  - Refactored the parameter tree into the (gov/hh/calibration/contrib)|(dept) format.
  date: 2022-08-28 14:45:36
- bump: minor
  changes:
    added:
    - Ofgem energy price cap subsidy parameters.
  date: 2022-09-07 12:15:01
- bump: patch
  changes:
    added:
    - New monthly CPI values until July.
  date: 2022-09-11 15:04:15
- bump: minor
  changes:
    added:
    - Energy Price Guarantee parametric reform.
  date: 2022-09-14 19:32:06
- bump: patch
  changes:
    fixed:
    - Validation page.
  date: 2022-09-15 13:40:02
- bump: minor
  changes:
    added:
    - Wealth tax.
  date: 2022-09-17 16:24:23
- bump: minor
  changes:
    added:
    - Metadata for SDLT, LTT and LBTT parameters.
  date: 2022-09-21 11:06:49
- bump: minor
  changes:
    added:
    - Flat basic income amount.
  date: 2022-09-27 15:37:07
- bump: patch
  changes:
    fixed:
    - UC amount for single, under-25s after the last uprating.
  date: 2022-10-04 11:02:45
- bump: minor
  changes:
    changed:
    - Moved to PolicyEngine Core.
  date: 2022-10-22 18:22:07
- bump: minor
  changes:
    changed:
    - Roles to 'member'.
  date: 2022-12-06 12:00:54
- bump: patch
  changes:
    fixed:
    - PolicyEngine-Core pinned to a minor version.
  date: 2022-12-07 13:31:54
- bump: patch
  changes:
    fixed:
    - Incorporated Core fix.
  date: 2022-12-07 13:50:34
- bump: minor
  changes:
    added:
    - LVT
    - Carbon tax
    - NI BRMAs
    - NI domestic rates by local authority
  date: 2022-12-11 18:29:22
- bump: patch
  changes:
    added:
    - Metadata for contrib parameters.
  date: 2022-12-13 20:20:48
- bump: patch
  changes:
    added:
    - Metadata for PolicyEngine.
  date: 2022-12-14 16:33:27
- bump: patch
  changes:
    changed:
    - Bumped PolicyEngine-Core.
  date: 2022-12-15 16:10:43
- bump: patch
  changes:
    added:
    - Variable metadata for disability variables.
    - Auto-update for the API.
  date: 2022-12-20 10:59:01
- bump: patch
  changes:
    added:
    - ENV token for the deployment action.
  date: 2022-12-20 11:41:05
- bump: patch
  changes:
    added:
    - Token for GitHub PR filing (deployment of the API).
  date: 2022-12-20 14:11:35
- bump: minor
  changes:
    added:
    - Normalised poverty and deep poverty variables.
  date: 2022-12-27 13:53:34
- bump: patch
  changes:
    fixed:
    - Bug causing UC housing entitlements to be too low for single people with children.
  date: 2022-12-28 17:28:42
- bump: patch
  changes:
    changed:
    - Reorganised variables in the input tree.
  date: 2022-12-30 17:05:40
- bump: patch
  changes:
    added:
    - Missing label in inputs.
  date: 2023-01-03 20:32:56
- bump: patch
  changes:
    changed:
    - PolicyEngine Core version widened.
  date: 2023-01-03 23:39:07
- bump: patch
  changes:
    added:
    - Metadata on modelled policies.
  date: 2023-01-06 10:07:28
- bump: patch
  changes:
    changed:
    - Use `adds` and `subtracts` everywhere.
    - Replace `aggr` with `add`.
    - Apply `defined_for`.
    - Use `default` arg to `select` rather than dummy `True` condition.
  date: 2023-01-10 17:31:54
- bump: minor
  changes:
    added:
    - Monthly NI calculations.
  date: 2023-01-19 22:59:56
- bump: minor
  changes:
    added:
    - VAT imputation and implementation.
  date: 2023-01-25 21:14:21
- bump: minor
  changes:
    added:
    - Wealth tax brackets.
    - Intermediate benefit uprating (multiplies by a percentage).
  date: 2023-01-26 20:09:59
- bump: patch
  changes:
    changed:
    - MTR calculation limited to one person for speed improvement.
    - Benefit cap implementation refactored to share code between UC and HB.
    fixed:
    - Property income reduces UC as unearned income.
  date: 2023-01-27 09:21:35
- bump: patch
  changes:
    changed:
    - VAT adjusted to hit administrative targets.
  date: 2023-01-27 13:02:28
- bump: patch
  changes:
    changed:
    - Raised default age from 18 to 30.
  date: 2023-02-01 00:43:08
- bump: patch
  changes:
    changed:
    - Increased default age from 30 to 40.
  date: 2023-02-01 03:38:40
- bump: patch
  changes:
    fixed:
    - Bug causing pension contributions to not be correctly deducted from taxable
      income.
  date: 2023-02-27 13:23:51
- bump: patch
  changes:
    fixed:
    - Energy Price Guarantee implementation.
  date: 2023-02-27 15:06:37
- bump: patch
  changes:
    added:
    - Seasonality to EPG modelling (simple).
    - EPG documentation updates.
  date: 2023-02-27 15:37:16
- bump: patch
  changes:
    fixed:
    - Properly exclude primary residence values from the CEC wealth tax.
  date: 2023-02-27 16:01:50
- bump: patch
  changes:
    fixed:
    - EPG properly included in net income.
  date: 2023-02-27 16:53:13
- bump: patch
  changes:
    fixed:
    - EPG test used the wrong variable name.
  date: 2023-02-27 17:19:33
- bump: patch
  changes:
    fixed:
    - Parameter updates for the CoL payments.
    - Metadata for the CEC wealth tax.
  date: 2023-03-02 11:57:32
- bump: minor
  changes:
    added:
    - State Pension uprating parameter.
    fixed:
    - Corporate wealth for pensioners capped to ensure consistency with pension income
      in some cases.
    - EBC end date is before 2023.
  date: 2023-03-03 16:23:13
- bump: patch
  changes:
    fixed:
    - Bugs relating to private pension contributions.
  date: 2023-03-14 18:22:37
- bump: minor
  changes:
    changed:
    - Fuel duty incidence assumed to be 100% on consumers.
  date: 2023-03-15 11:40:17
- bump: minor
  changes:
    changed:
    - PolicyEngine Core data updates accounted for.
  date: 2023-03-23 08:45:05
- bump: patch
  changes:
    fixed:
    - Made Survey-Enhance a dev dependency.
  date: 2023-03-25 23:53:14
- bump: patch
  changes:
    fixed:
    - Import errors due to survey-enhance.
  date: 2023-03-26 00:21:18
- bump: patch
  changes:
    fixed:
    - Marriage Allowance previously didn't have an economic impact.
  date: 2023-03-30 14:03:15
- bump: minor
  changes:
    added:
    - Improvements to calibration routines.
  date: 2023-04-01 09:38:48
- bump: patch
  changes:
    added:
    - Speed improvements
    - Parameter metadata fixes
  date: 2023-04-10 13:36:29
- bump: minor
  changes:
    added:
    - Extra tax bands for the UK and Scotland.
  date: 2023-04-24 12:16:00
- bump: minor
  changes:
    added:
    - Spring Budget 2023 policy changes.
  date: 2023-04-24 14:03:45
- bump: minor
  changes:
    added:
    - 2023 tax rates for UK and Scotland
  date: 2023-04-24 14:04:39
- bump: minor
  changes:
    added:
    - Savings variable from the WAS.
    fixed:
    - Added logging for targets in imputations for completeness.
  date: 2023-05-09 17:02:36
- bump: patch
  changes:
    added:
    - Missing labels for parameters.
  date: 2023-05-23 12:04:57
- bump: minor
  changes:
    added:
    - Python 3.10 support.
  date: 2023-05-27 15:52:33
- bump: patch
  changes:
    fixed:
    - Household basic income phase-out rate unit.
  date: 2023-05-28 02:23:58
- bump: minor
  changes:
    added:
    - Marriage tax-related reforms.
  date: 2023-06-18 09:17:08
- bump: patch
  changes:
    fixed:
    - A bug in the income-splitting logic that caused taxable incomes to be too low.
  date: 2023-06-20 19:19:13
- bump: minor
  changes:
    added:
    - Updates to calibration statistics from 2023 benefits and tax sources.
  date: 2023-07-09 19:21:46
- bump: minor
  changes:
    fixed:
    - Bug affecting the two-child limit (1% of households)
  date: 2023-07-17 17:10:23
- bump: minor
  changes:
    changed:
    - Calibration updated with new DWP statistics.
  date: 2023-07-21 12:20:43
- bump: minor
  changes:
    added:
    - Updates values for universal credit from 2016 to 2023
  date: 2023-08-07 16:52:20
- bump: patch
  changes:
    fixed:
    - Temporarily remove PIP, DLA and minimum wage parameters from the app.
  date: 2023-08-12 17:36:09
- bump: patch
  changes:
    added:
    - Documentation for fuel duty.
  date: 2023-08-24 14:59:45
- bump: patch
  changes:
    added:
    - Documentation example.
  date: 2023-09-14 13:53:16
- bump: patch
  changes:
    fixed:
    - TOC entry for NI documentation.
  date: 2023-09-14 15:25:24
- bump: minor
  changes:
    added:
    - Update Universal Credit documentation
  date: 2023-09-14 15:31:01
- bump: patch
  changes:
    added:
    - Documentation for TV licence.
  date: 2023-09-14 15:35:12
- bump: patch
  changes:
    fixed:
    - Small issues on the NI page.
  date: 2023-09-14 16:06:31
- bump: patch
  changes:
    removed:
    - numpy pin.
  date: 2023-10-09 19:01:07
- bump: patch
  changes:
    added:
    - Documentation for Stamp Duty Land Tax.
  date: 2023-10-12 15:11:13
- bump: minor
  changes:
    added:
    - Child minimum age for basic income.
  date: 2023-10-17 14:55:07
- bump: minor
  changes:
    added:
    - Pension Credit documentation page.
  date: 2023-10-19 15:46:33
- bump: patch
  changes:
    fixed:
    - Bug causing child minimum basic income ages to function incorrectly when the
      adult UBI is nonzero.
  date: 2023-10-27 20:42:43
- bump: patch
  changes:
    added:
    - Documentation for Land and Buildings Transaction Tax.
    - Documentation for Land Transaction Tax.
    fixed:
    - Updated LBTT rate increase for non-primary residences.
    - Fixed SDLT description.
  date: 2023-11-16 16:32:22
- bump: minor
  changes:
    added:
    - Switch for benefit uprating.
  date: 2023-11-22 12:04:13
- bump: minor
  changes:
    added:
    - HM Treasury baseline for CPI uprating benefits.
  date: 2023-11-22 15:17:21
- bump: minor
  changes:
    added:
    - Update National Insurance documentation
    - Update Income Tax documentation
  date: 2023-11-23 16:22:19
- bump: patch
  changes:
    removed:
    - 19% basic rate change proposed for 2024 that was never enacted.
  date: 2023-11-23 18:03:37
- bump: patch
  changes:
    fixed:
    - Added missing label for benefit uprating.
  date: 2023-11-24 10:49:06
- bump: patch
  changes:
    fixed:
    - Added missing label for benefit uprating.
  date: 2023-11-26 14:29:46
- bump: minor
  changes:
    added:
    - Enhanced FRS version for December 2023.
  date: 2023-12-05 12:45:18
- bump: patch
  changes:
    added:
    - Test cases for TV Licence.
  date: 2023-12-14 16:07:36
- bump: patch
  changes:
    added:
    - Missing uprating parameters for 2018.
  date: 2023-12-15 14:32:51
- bump: minor
  changes:
    changed:
    - Validated and standardised National Insurance variables.
  date: 2023-12-15 14:54:47
- bump: patch
  changes:
    fixed:
    - Bump policyengine-core to capture simulation randomness bug fixes.
  date: 2023-12-17 10:18:46
- bump: patch
  changes:
    added:
    - Added tests for fuel duty.
  date: 2024-01-04 16:08:24
- bump: minor
  changes:
    added:
    - Update PIP documentation
  date: 2024-01-04 16:18:59
- bump: minor
  changes:
    changed:
    - Calibration routine to include benefit cap statistics.
    fixed:
    - Benefit cap UC bug.
  date: 2024-01-28 17:39:54
- bump: minor
  changes:
    added:
    - Add Income Tax test.
  date: 2024-02-01 16:02:50
- bump: minor
  changes:
    added:
    - Household wealth decile.
    changed:
    - Assign decile of -1 to households with negative income.
  date: 2024-02-17 21:35:30
- bump: minor
  changes:
    added:
    - Initial version of capital gains imputations and logic.
  date: 2024-02-19 22:00:58
- bump: minor
  changes:
    added:
    - Docker image deployment for streamlit documentation.
  date: 2024-02-19 22:26:55
- bump: patch
  changes:
    changed:
    - Lowered rates for Class 1 and Class 4 NICs, pursuant to the Autumn Statement
      2023
    - Set Class 2 NIC rate to 0%, pursuant to the Autumn Statement 2023
  date: 2024-03-04 18:45:44
- bump: minor
  changes:
    fixed:
    - Carbon tax intensities for 2024.
    - UK NI rate for 2024.
  date: 2024-03-05 11:48:27
- bump: minor
  changes:
    added:
    - Fuel duty revenue projections
  date: 2024-03-05 17:37:39
- bump: minor
  changes:
    added:
    - add Income Tax Integration Test
  date: 2024-03-07 16:04:57
- bump: minor
  changes:
    changed:
    - OBR forecast update.
  date: 2024-04-12 17:36:36
- bump: patch
  changes:
    fixed:
    - Bug causing frs_2021 simulations to error.
    - Unnecessary system initialisation code.
  date: 2024-04-16 13:18:46
- bump: minor
  changes:
    fixed:
    - Capital gains tax improvements.
  date: 2024-04-30 17:53:26
- bump: patch
  changes:
    fixed:
    - Update BRMAs.
  date: 2024-04-30 18:10:23
- bump: minor
  changes:
    added:
    - State Pension Age reforms.
  date: 2024-05-01 16:32:07
- bump: minor
  changes:
    added:
    - U.S. progress on labour supply responses.
  date: 2024-05-02 11:47:45
- bump: minor
  changes:
    added:
    - Abolition switch for State Pension payments.
    - Freeze switch for Pension Credit payments.
    fixed:
    - New benefit claimants are now accounted for in reforms.
  date: 2024-05-23 17:20:21
- bump: minor
  changes:
    added:
    - Pensioner personal allowance
  date: 2024-05-27 22:27:48
- bump: minor
  changes:
    added:
    - Improvements to State Pension handling.
    - Basic/additional State Pension splitting.
  date: 2024-05-28 11:46:47
- bump: minor
  changes:
    added:
    - Recent reforms to Income Tax and NI.
  date: 2024-06-07 08:22:24
- bump: minor
  changes:
    added:
    - Conservative manifesto policy to move CB HITC to household based.
  date: 2024-06-10 12:42:45
- bump: minor
  changes:
    added:
    - Budgetary change distributional impact parameters.
  date: 2024-06-11 07:51:23
- bump: minor
  changes:
    fixed:
    - Property sale rates at 4.5%.
  date: 2024-06-11 15:49:29
- bump: patch
  changes:
    changed:
    - Uprated PIP, DLA, and Accessibility Account
    - Re-enabled PIP and DLA within webapp
    - Corrected mistakes in PIP
  date: 2024-06-17 16:09:43
- bump: patch
  changes:
    added:
    - Private school VAT calculation
  date: 2024-06-28 00:49:27
- bump: minor
  changes:
    added:
    - Non-dom status switch.
  date: 2024-06-28 16:35:47
- bump: minor
  changes:
    added:
    - High-income budget switch.
    removed:
    - Non-dom logic.
  date: 2024-06-28 19:59:31
- bump: minor
  changes:
    added:
    - 2022-23 FRS.
  date: 2024-07-10 18:29:49
- bump: patch
  changes:
    added:
    - Tests to income-related variables
  date: 2024-07-10 18:58:10
- bump: patch
  changes:
    added:
    - Auto-updating of the household API when this package is updated
  date: 2024-07-10 20:08:36
- bump: patch
  changes:
    changed:
    - Refactor the Universal Credit parameter, variable and test files.
  date: 2024-07-11 14:58:53
- bump: patch
  changes:
    changed:
    - Refactor the Housing Benefit parameter, variable and test files.
  date: 2024-07-15 12:12:25
- bump: patch
  changes:
    added:
    - References to many income tax provisions.
    fixed:
    - Folder distribution and formatting for income tax-related variables.
    - pays_scottish_income_tax now returns a Boolean value.
  date: 2024-07-17 15:26:43
- bump: patch
  changes:
    fixed:
    - Ensure household API version script bumps UK version
  date: 2024-07-17 16:23:18
- bump: major
  changes:
    changed:
    - Fiscal years are years by default.
  date: 2024-07-19 09:43:03
- bump: minor
  changes:
    changed:
    - Simplified uprating indices by moving OBR parameters to gov folder.
  date: 2024-07-26 08:35:13
- bump: minor
  changes:
    added:
    - Tax on excess pension contributions
    fixed:
    - Include Scottish income tax calculation within overall UK income tax calculation
    - Apply allowances to all types of income
    - Prevent negative income tax output
    - Update Dividend Allowance values
    - Correct Starter Rate for Savings taper structure
    - Prevent calculation errors due to empty extra dividend bracket with conflicting
      rates
  date: 2024-07-27 10:02:38
- bump: minor
  changes:
    added:
    - Winter Fuel Allowance.
  date: 2024-07-29 16:47:34
- bump: minor
  changes:
    added:
    - Winter Fuel Payment to household benefits.
  date: 2024-07-30 13:05:05
- bump: minor
  changes:
    added:
    - Docs page about SPI 2020/21 validation
    fixed:
    - Correct Scottish income tax rates for 2020/21
  date: 2024-08-08 15:33:05
- bump: patch
  changes:
    changed:
    - Corrected spelling on SPI validation documentation entry
    - Corrected argparse version
  date: 2024-08-12 22:11:31
- bump: minor
  changes:
    fixed:
    - Updated inflation uprating for COICOP categories.
  date: 2024-08-15 11:09:56
- bump: minor
  changes:
    added:
    - CPI category forecasts.
  date: 2024-08-15 11:36:14
- bump: patch
  changes:
    added:
    - Mask applied to private_school_vat to prevent calculation error when household
      weights aren't provided
  date: 2024-08-22 20:35:09
- bump: patch
  changes:
    added:
    - Test suite for private_school_vat
    - Test suite for attends_private_school
    removed:
    - Unnecessary print statement in winter_fuel_allowance
  date: 2024-08-28 23:37:22
- bump: patch
  changes:
    changed:
    - Update policyengine-core.
    - Apply new approach to determine if in a microsimulation.
  date: 2024-09-03 22:35:35
- bump: patch
  changes:
    fixed:
    - Ensure rent index is tracking CPI.
  date: 2024-09-16 09:32:28
- bump: minor
  changes:
    fixed:
    - Missing metadata in variables.
    - Inflation uprating for some parameters.
    - Inconsistent variable capitalisation.
  date: 2024-09-16 11:41:10
- bump: major
  changes:
    changed:
    - Dataset handling outsourced to policyengine-uk-data.
  date: 2024-09-18 10:53:42
- bump: minor
  changes:
    fixed:
    - Add back recursive-include.
  date: 2024-09-18 11:04:12
- bump: patch
  changes:
    removed:
    - Survey-Enhance as a dependency.
  date: 2024-09-18 11:12:23
- bump: minor
  changes:
    fixed:
    - Add employer NI incidence.
  date: 2024-10-16 11:52:07
- bump: minor
  changes:
    changed:
    - UK-data bumped to 1.5.
  date: 2024-10-17 10:47:06
- bump: minor
  changes:
    added:
    - Employee incidence percentage for employer NICs.
  date: 2024-10-17 21:43:42
- bump: minor
  changes:
    changed:
    - UK data package bumped to 1.6.
  date: 2024-10-19 09:27:21
- bump: minor
  changes:
    fixed:
    - Bug in budget change reforms.
  date: 2024-10-19 19:58:09
- bump: minor
  changes:
    added:
    - Automatic allocation of post-employee-incidence employee to households (consumers/capital).
  date: 2024-10-21 10:09:01
- bump: minor
  changes:
    fixed:
    - Adjusted private school attendance factor to 0.85.
  date: 2024-10-21 13:04:20
- bump: minor
  changes:
    changed:
    - UK data updated to 1.8.0.
  date: 2024-10-22 08:36:24
- bump: minor
  changes:
    changed:
    - Data bumped to 1.9.0.
  date: 2024-10-22 11:24:42
- bump: minor
  changes:
    added:
    - Benefit uprating for 2025/26.
  date: 2024-10-23 10:15:26
- bump: minor
  changes:
    added:
    - Capital Gains Tax elasticities.
  date: 2024-10-23 14:47:21
- bump: minor
  changes:
    fixed:
    - Bug causing household app crashes.
    - Metadat for OBR parameters.
  date: 2024-10-24 11:42:25
- bump: patch
  changes:
    fixed:
    - Bug causing capital gains responses to be calculated for every reform simulation.
  date: 2024-10-24 13:24:27
- bump: patch
  changes:
    fixed:
    - Threshold freeze for ST extended to 2027.
  date: 2024-10-28 10:46:29
- bump: minor
  changes:
    fixed:
    - Bugs affecting household app calculations.
  date: 2024-10-28 12:09:01
- bump: patch
  changes:
    fixed:
    - NI threshold in 2027.
  date: 2024-10-30 14:02:58
- bump: minor
  changes:
    added:
    - OBR Autumn 2024 EFO economic factors.
  date: 2024-10-30 17:24:57
- bump: patch
  changes:
    fixed:
    - Bug in budget change reforms.
  date: 2024-11-05 14:05:53