Pywayland

* Update wayland and wayland protocols versions
* Update setup.cfg to use `license_files`
* Drop 3.7 wheels

**Full Changelog**: https://github.com/flacjacket/pywayland/compare/v0.4.15...v0.4.16

What's Changed
* CVE-2007-4559 Patch by TrellixVulnTeam in https://github.com/flacjacket/pywayland/pull/42
* Fix bug in protocols generated with latest version of wayland-protocols
* Bump version of wayland-protocols in release and in CI to 1.31

New Contributors
* TrellixVulnTeam made their first contribution in https://github.com/flacjacket/pywayland/pull/42

**Full Changelog**: https://github.com/flacjacket/pywayland/compare/v0.4.14...v0.4.15

What's Changed
* Bump wayland protocols version used in CI by flacjacket in https://github.com/flacjacket/pywayland/pull/40
* Add wl_resource_get_client to lib by m-col in https://github.com/flacjacket/pywayland/pull/39


**Full Changelog**: https://github.com/flacjacket/pywayland/compare/v0.4.13...v0.4.14

What's Changed
* [Bump wayland version used in CI and releases](https://github.com/flacjacket/pywayland/commit/ef8f346469c266d76672ad922b4c99038a998333)
* [Improve arg formatting in docs](https://github.com/flacjacket/pywayland/commit/0706fdef2ee296ed86b68c84785056fec1f07c30)
* [Fix doc generation with latest sphinx](https://github.com/flacjacket/pywayland/commit/16db48f7a22bfadccec274991696ce9b418377cc)

**Full Changelog**: https://github.com/flacjacket/pywayland/compare/v0.4.12...v0.4.13