Merge pull request nschloe#97 from nschloe/version-bump

bump __version__

Merge pull request nschloe#91 from nschloe/topic

Topic

Merge pull request nschloe#89 from nschloe/version-bump

update version number

Merge pull request nschloe#85 from nschloe/version-bump

version bump to 0.5.4

Merge pull request nschloe#80 from nschloe/classifiers

corrected classifiers

Merge pull request nschloe#77 from nschloe/version

version bump

tagging v0.5.1

tagging v0.5.0

tagging 0.4.1

tagging v0.4.0