Merge branch 'hotfix/0.20.3'
Merge branch 'release/0.21'
unit test for xsl_transform text output
set hotfix version 0.21.1
Merge branch 'develop' into hotfix/0.21.1

Conflicts:
	eulxml/__init__.py
Merge branch 'hotfix/0.21.1' into develop
set develop version back to 0.22.0 after creating 0.21.1 hotfix