Misc cleanup of comments
Adding mathphrase template
Added handling for lone nested block element inside para.
Adding handling for phrase with role attribute strong
Adding handling for phrase with attribute bolditalic
Fixing literallayout handling
Adding data-remap attribute for symbol element
Adding tentative handling for formalpara; may need to revise
Starting work on file chunking option; switched to XSLT 2.0 to use xsl result-document
AT-173 Starting work on callouts; Also some misc comment cleanup in script.
Adding handling to move nested block elements outside of parent para or simpara element
Fixing co and callout handling
Commenting out chunking section for now; Adding more comments to nested block elements section
Merge pull request #5 from jlhosman/master

Various additions and updates & Switched to XSLT 2.0