It's a basic gui frontend that runs a PGN clean-up & process script that chains together various great PGN tools mainly 40-H tools from Norm Pollock, but also PGN-Extract by David J Barnes, Joined by Andreas Stabel & PGN Manager by Eduardo Suastegui.
I didn't bundle 40-H tools and PGN-Extract with the program in case there are some issues but there is a download button in the gui
to download and install the tools directly from the author's websites.
1. Fixed bug where it wouldn't load pgn files produced by ChessBase.
2. Duplicates removal tool was switched from Pgn-Extract to Pgn-manager.
3. Added an option to produce an additional analysis pgn file using the tool
'Analyse-Pgn' by Jubal Mordecai Velasco which adds comments to the moves
such as 'good','bad',"excellent","blunder" using Stockfish.