Merge pull request #93 from hugovk/master

Change URLs from hugovk to pylast
Merge pull request #94 from hugovk/master

Change URL, add classifiers and keywords
Bump version to 1.0.0
Update install instructions now 1.0.0 is on PyPI

[CI skip]
Fix opus comparison with None
syntax highlighting in readme
Merge pull request #96 from kiliankoe/master

syntax highlighting in readme [CI skip]
Add badge for number of PyPI downloads

 [CI skip]
Add PyPI version badge

[CI skip]
Fix comparison with None for artist, album and event, with test. For #97.