Add grouping of undo/redo by user action so that replacing the selection, etc, works
tree324a098f90923efbdfc33a458f829a2042e58c91
-rw-r--r-- 6 .gitignore
-rw-r--r-- 17993 COPYING
-rw-r--r-- 680 README
drwxr-xr-x - bin
drwxr-xr-x - lib