Improved return value of validate_xml. Closes #98.
Updated documentation
Changed validate_xml per #98.
Fixed tests to account for changes
Added subscription ID parameter. Closes #85.
Changed docstring to be more useful/correct
Validation failures now print all errors
modified to print all xml validation errors
Updated docs
Added new validation classes
Reverted changes to validate_xml
Added deprecation comment to validate_xml
Test validation the new way and the old way
Updated documentation
Merge pull request #102 from TAXIIProject/validate_xml_improvements

Validate xml improvements