0.0.96 beta2 and beta3

[KitsuneRal]

Pre-check:

• [x] There are no pending issues in the Roadmap for this release (if there are, move them away or close them)
• [x] Check the correct branch/commit:
  • [x] in the Quaternion repo
  • [x] Quotient repo submodule ref
  • [x]
• [x] Make sure dependent version of libQuotient in CMakeLists.txt is up-to-date
• [x] Pull translations
  • [x] If needed, update the list of languages in CMakeLists.txt
  • [x] Unset the branch tag after merging
• [x] Check that contents of README.md, SECURITY.md, and BUILDING.md are up-to-date
• [x] If quaternion_en.ts is changed, review, commit and push the changes before proceeding
• [x] Rebuild and smoke-test the application

Actions:

• [x] Update the version number in main.cpp and CMakeLists.txt
• [x] Add a release record to linux/com.github.quaternion.appdata.xml
  • [x] Copy a summary of changes to the release <description>
• [x] git commit
• [x] git tag N.M.L && git push --tags
• [x] Update Flathub repo
  • [x] Download and smoke-test the binary (check the version!)
  • [x] Merge the PR
• [x] Go to the Releases page and open the already pending draft:
  • [x] Check the tag (must be the same as above)
  • [x] Thank all contributors whose commits landed in this release
  • [x] Describe all notable fixes/enhancements
  • [x] Publish release notes
  • [x] Update the Releases Wiki page
• [x] Update the topic in #quaternion
• [x] Post a TWIM update

Post-release:

• [x] Open the release page in Incognito/Privacy mode; check:
  • [x] the version
  • [x] the Git tag
  • [x] Check the pre-release checkbox if this version is a beta or release candidate
• [x] Add '+git' to the version number in 'main.cpp'
• [x] git commit && git push