Enter `stringstool`, which can extract localizable strings from IB files.

Expected usage, `./Tools/stringstool extract --output-directory "Localized/en.lproj" "Nibs/*.xib".
Update English strings files with `stringstool`.
Add pjr TODOs.
Rename a misleading variable.
Create the output directory if it doesn't exist.
Don't add duplicate strings more than once.
Add a banner at the top of the extracted file.
Name match variables.
Allow keys to be ignored.
More correct explanation.
add release notes for 1.0.1
bump version to 1.0.1, build number 4001
move things around so header and implementation categories match
fix typos in +[QSRegistry setObject:forKey:inTable:]
add #1542 to the release notes
Merge pull request #1542 from skurfer/warnings

Warnings
use only the search string when going into text mode

Don't attempt to append characters from the event.

fixes #1544
append the '.' when switching to text mode while typing
check the event type to prevent an exception
Default the third pane for "Assign Abbreviation" to the matched string.