`String.fromCharCode()` has a limitation to Unicode characters in the BMP. Change to `String.kmwFromCharCode()` to handle entire Unicode range.
Also clarified how default key codepoints are processed.
KeyboardHarness changes:
- Change text area font on keyboard change
- Added U_10481 to test longpress keyboard.
- Remove test tchad keyboard
* Fixes#107 - move __BUILD__ and dfltLayout variables into tavultesoft object
* Cherry-pick fix for error from attachment api rework #114
* Fixup missing __BUILD__ reference
* Update header version number
* Fixup broken getDefaultKeyObject() call so we can release 2.0
* Fixes#118 - longpress menu sometimes missing base key on phone devices (#134)
* Add note to build scripts to remind devs to make changes to both scripts
