v1.21.1

Unitful v1.21.1

Diff since v1.21.0

Merged pull requests:

• Add docs chapter on default units and physical constants (#729) (@Eben60)
• Readme: Add reference to UnitfulParsableString.jl (#730) (@Eben60)
• Add tests for issues #430 and #660 (#741) (@Socob)
• Fix docstring tests for Julia v1.12 and test on v1.10 (LTS) (#744) (@sostock)
• cis/cispi without explicit uconvert (calls sincos/sincospi) (#745) (@sostock)
• Performance improvements for trig functions with @fastmath (#750) (@sostock)
• Release v1.21.1 (#751) (@sostock)

Closed issues:

• Overflow in conversion (#430)
• We have sincos, but no sincosd? (#450)
• Int64 Overflow on Simple Conversion (#660)
• unit(Quantity) should be an error (#734)
• Base.cis operating on angles in degrees first converts to radians (#738)
• Base.show(::IO, ::T) does not return parseable Julia code for numerous types (#743)
• Is one of a quantity expected to return the backing type? (#748)