Summarized changelog:
- python bindings: fix "TypeError: argtypes must be a sequence of types"
- Add symbol versions - be ready to introduce new APIs as needed
- Add public px_proxy_factory_free_proxies function
- Add PacRunner config backend (largely untested; feedback welcome!)
- Small performance improvements
- pxgsettings: use the correct syntax to connect to the changed signal (silences annoying output on console)
- Support python3 up to version 3.9
- Fix buffer overflow when PAC is enabled (CVE-2020-26154)
- Rewrite url::recvline to be nonrecursive (CVE-2020-25219)
- Remove nonfunctional and crashy pacrunner caching
- Never use system libmodman (no other consumers, not maintained)
Signed-off-by: Algent Albrahimi <algent@protonmail.com>