Add goto, change case, replace character, yank, move to start of file & move to end of file commands. Add position type (before line, after line) to and newline commands. Add deletion type (character, to enf of line, whole line) to delete command.
Add ContentManager. Fix problem with unknown operations.
Add goto command to simple editor. Misc checkstyle fixes.
Set displayAs property when saving prompts for a path.
Fix some possible NPEs in Files.
Fix a glitch with the cursor coordinates in the simple editor.
Checkstyle fixes.
Reduce the distance between supported operations in the simple editor footer.