Pymodes

What's Changed
* Fixed C code build process, now they can be built with `uv build`
* Fixed error when receiving NICv1 in example decoder due to mismatch in output by kestr31 in https://github.com/junzis/pyModeS/pull/180
* Fix for a corner-case numerical problem and corresponding unit test. by EdFuentetaja in https://github.com/junzis/pyModeS/pull/181
* Fix floating point display on terminal output by jbencina in https://github.com/junzis/pyModeS/pull/183
* Explicitly set multiprocessing start method to fork for OSX support by jbencina in https://github.com/junzis/pyModeS/pull/182

New Contributors
* kestr31 made their first contribution in https://github.com/junzis/pyModeS/pull/180
* EdFuentetaja made their first contribution in https://github.com/junzis/pyModeS/pull/181
* jbencina made their first contribution in https://github.com/junzis/pyModeS/pull/183

**Full Changelog**: https://github.com/junzis/pyModeS/compare/v2.19...v2.20

Fixes:
- BDS50: track angle when bits are all zeros or ones
- BDS50: vertical rates when bits are all zeros or ones

Changed from poetry to uv for package management.

What's Changed
* Bump snok/install-poetry from 1.3.3 to 1.3.4 by dependabot in https://github.com/junzis/pyModeS/pull/156
* Bump actions/checkout from 3 to 4 by dependabot in https://github.com/junzis/pyModeS/pull/158
* Properly return None if altitude could not be decoded by paulmadejong in https://github.com/junzis/pyModeS/pull/162
* Update allcall.py by Flyer350 in https://github.com/junzis/pyModeS/pull/161
* DI = 1 correction for uplink messages by Flyer350 in https://github.com/junzis/pyModeS/pull/157
* Bump actions/setup-python from 4 to 5 by dependabot in https://github.com/junzis/pyModeS/pull/163
* Bump codecov/codecov-action from 3 to 4 by dependabot in https://github.com/junzis/pyModeS/pull/165
* Bump actions/cache from 3 to 4 by dependabot in https://github.com/junzis/pyModeS/pull/166
* Added a function that retrieves RSSI values from Mode-S messages received by PiAware devices by kirth123 in https://github.com/junzis/pyModeS/pull/172
* Bump snok/install-poetry from 1.3.4 to 1.4.0 by dependabot in https://github.com/junzis/pyModeS/pull/171
* Fixed "Megnatic" typo by chrislanzara in https://github.com/junzis/pyModeS/pull/170
* Some annotations for physical quantities by xoolive in https://github.com/junzis/pyModeS/pull/151
* Mods20230421a by gituser283 in https://github.com/junzis/pyModeS/pull/146

New Contributors
* kirth123 made their first contribution in https://github.com/junzis/pyModeS/pull/172
* chrislanzara made their first contribution in https://github.com/junzis/pyModeS/pull/170
* gituser283 made their first contribution in https://github.com/junzis/pyModeS/pull/146

**Full Changelog**: https://github.com/junzis/pyModeS/compare/v2.17...v2.18