Release checklist for Surge XT 1.3.3

[mkruselj]

Release label: XT 1.3.3
Link to milestone: https://github.com/surge-synthesizer/surge/milestone/xx

Pre-Install

• Address all open issues for the milestone
• Update the changelog
• Update the manual
• Make sure the CMakeLists.txt version matches the version you are about to install

Executing the Install

• Update releases-xt/azure-pipelines so we don't get a tag conflict when the release happens even if it is just a bump commit
• Create git markers in the surge repository
  • Unlock your GPG key just in case, by running gpg --output x.sig --sign CMakeLists.txt
  • Create a branch named git checkout -b release-xt/1.3.3
  • Sign a tag with git tag -s release_xt_1.3.3 -m "Create signed tag",
  • Push both the branch and tag to upstream git push --atomic upstream-write release-xt/1.3.3 release_xt_1.3.3

Post-Install

• Update and announce
  • Update Homebrew doc
  • Update Winget manifest (wingetcreate update --submit --urls https://github.com/surge-synthesizer/releases-xt/releases/download/1.3.3/surge-xt-win64-1.3.3-setup.exe --version 1.3.3 SurgeSynthTeam.SurgeXT)
  • Ping @luzpaz in Tracking Surge XT in the downstream package ecosystem #7132
  • Post to KvR thread, Facebook, Discord, etc.