UZDoom version history/prerelease

Note: This page is for drafting release notes for upcoming versions of UZDoom. All listed features are subject to change.

Commits since last release: https://github.com/UZDoom/UZDoom/compare/4.14.3...trunk

5.0 (xx xx 202x)

Moved as we are preparing for an immanent release: UZDoom_version_history/5.x#5.0