Release 1.2.2

Added

• New repository for UI/plugins. (sfztools/sfizz#1162)
• CI: Restored the macOS universal build that was working in AppVeyor
  (sfztools/sfizz@15628e1) but sacrifice
  WavPack assembly optimizations, see
  dbry/WavPack#93

Changed

• Updated VST3 SDK to v3.7.7, including our custom AU wrapper (#25)
• Updated VSTGUI to v4.12.3 (patched), this requires Windows 10 or later
• Updated stb_image to v2.28
• Updated LV2 bundled library to v1.18
• Various CMake and CI changes/fixes, also because the repository split
  Minimum CMake version required is now 3.15 for Windows, 3.13 for other systems
• Using linters for all type of plugins supported in CI

Fixed

• Various code fixes for the newer version of VSTGUI; Windows 10 minimum required

Removed

• macOS: removed DMG resources and Carbon support from VSTGUI