handle errors internally
updated preprocess
cleaned
moved css
wrapped and unwrapped xml
support for br's
allowances for first and last
added code to repair mangled tags
fixed mangled input
debug line
more cleanup
tokenized br tags
added class to buttons
Merge pull request #20 from ajstanley/collation_editor

handle errors internally
Removed some comments, fixed if statement and add the same statement to the right side logic.
Fixes the DomDocument warning for having an invalid span tag when you load the same version in both boxes.
Merge pull request #23 from matthewperry/7.x-collation-fix-warning

7.x collation fix warning