Fixed bugs:
* Fix Lichess bots
* A bug on pondering for engines
* A bug on Polyglot promotion moves
* A bug when adding a new engine to an existing tour but not update it to the engine list
Some small improvements/adjustments such as displaying tbhits inside the table
New features:
* Auto-create backup files for playing tournaments (starts from banksiaplaying.json.bk.1)
* Graphs: new types: dot, bar; new graphs for depth, nodes, speed, elapsed time. All are select from Settings
* Engine buttons: replaced buttons (defined by engines’ options) by combo box (dropbox) to save space and display text fully
* Extreme Chess Analysis (ECA): a lot of work done to make it become much more stable, reliable, and useable, from finding, fixing bugs to adding new features and functions: display board on left/right side or use big board; backup/restore files managing; merge; info/delete branches; export trees to opening books (PGN, EPD, Polyglot formats); show branch’s heights; more stats…

Fig. 1 New features: more graph types and graphs; drop box for engine buttons

Fig. 2 An ECA tree image