2.0.21
Add a note about when each plugin was added
Unify custom flags, private flags and internal flags
Remove the duplicate (and legally pointless) '(C)' from copyright lines
trivial: Do not use 'FuDevice *self' when defining a derived GObject
test: Split out FuTestDevice so we can set ->set_progress()
Fix `check-reboot-needed` command
Simplify the quirk file format