With the modern keyboard events, the Backspace/Enter handlers were being
triggered even when they were part of an IME composition, which broke
the native IME handling. We now ignore all keyboard events that are part
of composition to avoid this issue.
The keyboard event handling code was written over a decade ago and we
have better APIs now! More importantly, the old APIs are deprecated, so
we should stop using them.
Fixes#450
This is a massive refactor to port Squire to TypeScript, fix a bunch of small
bugs and modernise our tooling. The development was done on an internal
repository, so apologies to anyone following externally for the commit dump;
updates from here should come as real commits again.
Co-authored-by: Joe Woods <woods@fastmailteam.com>
