update maxVersion
Replace "new Date.getTime()" with "Date.now()"
Use latest buildscript
Update external libraries
Works on Nightly 20.0a1

Following features are removed, because the they should be done by other addons:

 * Highlight
 * Marker
 * Floating Findbar (change the position of the findbar)
Merge branch 'master' of github.com:piroor/xulmigemo

Conflicts:
	components/xmXMigemoTextUtils.js
	install.rdf
	modules/animationManager.js
	modules/boxObject.js
	modules/extensions.js
	modules/namespace.jsm
	modules/prefs.js
	modules/stringBundle.js