Fix syntax error with documentation
Fix for invalid XML exception with namespaces

See https://github.com/prujohn/dart-xml/issues/10.
Stop whitespace trimming in attributes

Changes:
* Now entire inside of a quote is now tokenized

Testing:
* Made test for new behavior, fixed broken ones
Make isInTag private
Merge pull request #1 from ajlai/fix/stop-whitespace-trimming-in-attributes

Stop whitespace trimming in attributes
Merge pull request #1 from danschultz/fixes

Initial changes