r13993

Tweak position of custom difficulty sliders

r13991

Add custom difficulty feature

r13990

Adjust sensitivity position count

r13984

CI: Use actions/upload-artifact@v4 and dawidd6/action-download-artifa…

r13983

CI: Use actions/checkout@v4

Avoids "Node.js 16 actions are deprecated" warnings.

r13982

Merge remote-tracking branch 'eduke32/master'

r13957

Allow mouse axis sensitivity to be set to zero

r13956

Tweak viewDrawAimedPlayerName() for autoaim

r13945

Always use modern method to clear game messages

This fixes a message draw glitch when finishing an episode, returning to menu with a demo playing in the background, and starting a new episode

r13940

Fix PK3 image degradation (#779)