This release has vastly improved error handling and reporting and now gives a summary of results upon completion. Additionally, output layout and formatting is now much clearer (and now includes colours!).
Other notable changes include the addition of help and about options and removal of all remaining Firefox ESR references in the main script. Version 1.3 also brings fixes for small bugs such as messages which imply success being shown regardless of whether the operation actually succeeded (now such messages are entirely conditional on success).
See changelog for further details.