Improvements:
- Fixes autocomplete text remaining in field after selection in Fx60
- No more text or icon shifting on select (tested on macOS)
Changes:
- Tags are now selected on mousedown with no active state, as in web
library
Regressions:
- Tooltip with tag type doesn't appear when hovering over icon
- Pressing Tab after modifying a tag loses focus
- Right-click in textbox shows custom menu instead of default text
editing context menu (Cut/Copy/Paste)
To-do:
- Switch to this version for note tags box
- Style colored tags in autocomplete drop-down? Sort to top?
- Only show delete button on row hover, as in web library?
`nsIFilePicker::show()` is removed in Firefox 60 in favor of `open()`,
which takes a callback (and apparently has been preferred for a long
time).
There's no point switching to that, so this module is a version of
nsIFilePicker with an async `show()` that returns a promise and some
XPCOM-isms replaced (e.g., string paths instead of nsIFile).
