pycapnp v1.3.0 released

[tripl...@gmail.com]

https://pypi.org/project/pycapnp/1.3.0/

https://github.com/capnproto/pycapnp/releases/tag/v1.3.0

v1.3.0 has been released!

## v1.3.0 (2023-01-26)
- Update to bundled capnproto-0.10.3
- Add Python 3.11 to Github Actions builds (#306)
- Prevent race condition in example code (#305)

This release deprecates manylinux2010 (which EOL'd last year https://discuss.python.org/t/dropping-manylinux2010-docker-images-support-in-2022/13540).

Older versions of capnproto will likely still work if you compile yourself (part of a system library). We won't go out of our way to break this support, but we also won't be checking for support.

As for Python 3.7 EOL, my current plan is to support is as long as we support manylinux2014. You can find the EOL dates here https://github.com/pypa/manylinux.

However, I don't expect to jump from manylinux2014 to manylinux_2_24 right away after the EOL (unless there is some technical reason to do so).

-HaaTa / Jacob Alexander