Ignore .cache.
Include subscribers / supporters in git. The need for network access part-way through a build causes loads of annoying CI failures.
Add comments for shortcuts and extract them for the manual (#2073).
Fix warning in previous.
.gitignore update.
Ignore vim-lsp.log.
Ignore ccls stuff.
Update .gitignore.
Fix .gitignore.
Ignore .flatpak-builder work directory.
Missing file.
Ignore some more stuff.
Tweak .gitignore
Some support for Zanata translations.
Various fixes to FFmpeg decoder, including a couple of tests.
Another tags file to ignore.
Various manual bits.
Tidy up manual changes.
Add a sketchy design document.
Try to fix up paths for video MXFs, hashes and temporarily-stored frames.