Run black on template.py

black

Merge pull request #575 from jhpyle/patch-1

encode XML as bytes in render_footnotes()

Merge branch 'bartbroere-patch-1'

Update CHANGES.rst

Merge pull request #527 from dralexxx/update_jinja2_version

regen pipfile.lock with newer jinja2 dependency version

PR #493

Merge pull request #482 from dreizehnutters/master

fixed element properties for highlighted text

remove unused code in doc_properties.py

Reorganize documentation