You don't need to lost your unsaved data any more. CotEditor automatically
backups your documents while editing, so that you can resume your editing
at the next session, even after force quitting.
cot command-line tool
The new cot command-line tool lets you open documents in CotEditor from
the command line. You can install it from Integration pane in Preferences.
Brand-new Find & Replace panel
The Find and Replace panel was totally re-designed with more modern and
organized looking.
New document inspector view
The legacy document information drawer was now migrated to a side panel
style. This change allows you to see document information even on the
full-screen mode.