Log Message:
py-xmltodict: updated to 0.13.0

v0.13.0

Add install info to readme for openSUSE.
Support defaultdict for namespace mapping
parse(generator) is now possible
Processing comments on parsing from xml to dict
Add expand_iter kw to unparse to expand iterables
Fixed some typos
Add support for python3.8
Drop Jython/Python 2 and add Python 3.9/3.10.
Drop OrderedDict in Python >= 3.7
Do not use len() to determine if a sequence is empty
Add more namespace attribute tests
Fix encoding issue in setup.py