Delete multiple items and cut/paste settings
Fixed reversed case sensitivity for aliases/triggers
Retrieve application version through Lua
Icon required for the "cut" toolbar button
Fixed issues with XML imports

Methods for importing XML from the clipboard, file, etc, have been made
more uniform and reliable. More fine-tuning may be needed yet.
Fixed/improved XML schema

The schema validation now works for any XML with groups, nested groups,
and other settings.