saving changes to switch to different branch to check on some code I
deleted in this branch. In the middle of modifying TaggedDocument and
DriverDocuments tab to allow free editing of the documentPane. Also
fixed issue with not saving full path of problem set to
anonymouth_prop.prop. Cleaned some code up.
Made progress with the editor. Not finished yet.
Added EOSCharacterTracker, and the editor works now for all types of
edits that don't attempt to cross sentence boundaries.
Updated EOSCharacterTracker..Next, TaggedDocument needs to be updated to
make use of this class (along with DriverDocumentsTab).