New: Browser BACK and FORWARD buttons work like UNDO and REDO for both logged-in and logged-out user.
New: Changed the shape of transfers back to the previous, more flat look. The bézier curve is not nicely rounded when flowing backwards but keeps uniform length elsewhere.
New: In a short transfer, only one SUM label is displayed in the middle of the transfer. In longer transfers, two SUM labels are displayed as before at each end.
New: User is prompted before closing unsaved browser window.
Bug: Many small bug fixes.
Bug: Many small visual improvements.
Enhancement: Diagram performance is improved by not rendering elements that are too small or too large. (the improvement is not as good as I hoped for, I will have to try other things)
Notes: There are still numerous bugs I know of but please let me know every time you see anything wrong