PostWe've just released v21.2.

We've just released v21.2. Thank you to everyone who contributed to this release. As usual, upgrade using pip install -U python-telegram-bot. This release brings full support for the new Bot API 7.3. Moreover, it removes backward compatibility for functionality deprecated in API 7.2. This is in line with our stated policy. Moreover, it includes improvements for the startup and shutdown behavior of Application. For the full list of changes and improvements, please see the below changelog. Major Changes • Full Support for Bot API 7.3 (#4246, #4260, #4243, #4248, #4242 closes #4236, #4247 by aelkheir) • Remove Functionality Deprecated by Bot API 7.2 (#4245) New Features • Add Version to PTBDeprecationWarning (#4262 closes #4261) • Handle Exceptions in building CallbackContext (#4222) Bug Fixes • Call Application.post_stop Only if Application.stop was called (#4211 closes #4210) • Handle SystemExit raised in Handlers (#4157 closes #4155 and #4156) • Make Birthdate.to_date Return a datetime.date Object (#4251) Documentation Improvements • Documentation Improvements (#4217) Internal Changes • Add New Rules to ruff Config (#4250) • Adapt Test Suite to Changes in Error Messages (#4238) Dependency Updates • Bump furo from 2024.4.27 to 2024.5.6 (#4252) • pre-commit autoupdate (#4239) • Bump pytest from 8.1.1 to 8.2.0 (#4231) • Bump dependabot/fetch-metadata from 2.0.0 to 2.1.0 (#4228) • Bump pytest-asyncio from 0.21.1 to 0.21.2 (#4232) • Bump pytest-xdist from 3.6.0 to 3.6.1 (#4233) • Bump furo from 2024.1.29 to 2024.4.27 (#4230) • Bump srvaroa/labeler from 1.10.0 to 1.10.1 (#4227) • Bump pytest from 7.4.4 to 8.1.1 (#4218) • Bump sphinx from 7.2.6 to 7.3.7 (#4215) • Bump pytest-xdist from 3.5.0 to 3.6.0 (#4215)