PIVOT-891:  Further improvements to TextPane:
* Fix a problem doing delete at end of paragraph and then inserting
  right there again -- the last node in the sequence may not get
  its offset updated because the character count is decremented
  first; should be decremented after.
* Make a bunch of additions to deal with the new CharSpan class
  and so we can make use of common code to do word, line selection
  amongst all three text input controls.
* Add some debug code in TextPane to print out node trees with their
  offsets and counts.
* Use the new CharUtils methods for moving around in and selecting
  text "words".


git-svn-id: https://svn.apache.org/repos/asf/pivot/trunk@1828291 13f79535-47bb-0310-9956-ffa450edef68
6 files changed