Make all files use strict mode.  Remove upgrade warning message.  Warn on reference to Zotero.Zutilo functions.  Catch invalid clipboard contents in pasteTags().  Declare undeclared variables.  Pass document to clipboard object in copyTags() and copyCreators().
Fix modify attachments path comparison (use substring comparison instead of regexp replace).  Fixes #6.
Add ability to modify parts of attachment paths other than the beginning
Update README
Merge branch bootstrap (makes Zutilo bootstrapped).
Proper capitalization in readme.xul.  Remove test upgrade message string left in last commit by accident.
Replace unload event listeners with domwindowclosed observers.
Streamlined version of bootstrapping.  Cleaned up notifications and listeners.
Remove support for old function names.