Added me as a maintainer.
pavucontrol: Adopt and clean dependencies
paprefs: Add package
Add nix-exec package
Tilda: update to 1.1.13

Closes #4307
mpv: update to 0.5.4

Also, a small update on internal let-waf expression

Closes #4306
Xiphos: update to 3.2.2

Closes #4312
Mednafen: update to 0.9.36.4

Closes #4304
Merge pull request #4309 from abbradar/paprefs

added "paprefs" package, adopted pavucontrol
fix mirror
pleasant ruby
some improvements
add libs to GEM_PATH
stop using gross dependency resolution
allow importGems to override cp args
include patches
correctly implement patching
further improvements to patches and build process
more gem improvements
terminal-notifier