* Add ip_address option to setup()

* Update README.md

* Add ability to RF scan a specific frequency

This adds an optional parameter to find_rf_packet(), along with a
corresponding --rflearn parameter (defaulting to 433.92) to
broadlink_cli that specifies the frequency to tune to, rather than
requiring the frequency be found via sweeping. This is almost mandatory
for certain types of remotes that do not repeat their signals while the
button is held, and saves significant time when the frequency is known
in advance or when many buttons are to be captured in a row.

Additionally:

- A get_frequency() API is added to return the current frequency the
  device is tuned to.

- A check_frequency_ex() API is added to perform functions of both
  check_frequency() and get_frequency() in a single call.

- broadlink_cli --rfscanlearn will now report the current frequency at 1
  second intervals during sweeping, and will report the frequency it
  finally locks on to.

* Clean up remote.py

* Clean up broadlink_cli

* Update conditional

* Fix message

---------

Co-authored-by: Felipe Martins Diel <[email protected]>

* Rename MP1S state parameters

* Rename get_status to get_state

* Add support for Wistar smart curtain (0x4F6C)

* Rename wsrc to wser

* Move IR duration<->Broadlink conversion down from CLI

* Fix --learn base64 to not crash with --durations

Also remove its b'...' wrapping.

* Fix IR/RF conversions

---------

Co-authored-by: William Grant <[email protected]>

* Fix s3.get_subdevices()

* Fix docstring

* Add support for Broadlink A2

* Add supported type

* Fix bugs

* Improve device name

* Add support for Tornado 16X SQ air conditioner

* Make Tornado a generic HVAC class

* Better names

* Clean up IntEnums

* Clean up encoders

* Fix indexes

* Improve set_state() interface

* Enumerate presets

* Rename state to power in get_ac_info()

* Paint it black

* Use CRC16 helper class

* Remove log messages

* Fix bugs

* Return state in set_state()