add a missing newline at the end of version.py
not X in -> X not in

According to http://legacy.python.org/dev/peps/pep-0008/#programming-recommendations,

    if foo is not None:

is preferred to

    if not foo is None:
fix a typo in resources.py
"dictionary like" -> "dictionary-like"

It is a compound adjective.
Merge pull request #48 from s3rvac/cosmetic-fixes

cosmetic fixes
docs donations section update [ci skip]
Merge branch 'master' of https://github.com/maxtepkeev/python-redmine into dev
custom resources doc update
resourceset cleanup