document release procedures
Update release-howto.rst

reminder to close off the current release on GitHub
Small typo in the GitHub repository URL
Merge pull request #122 from dimlev/patch-1

Small typo in the GitHub repository URL
Standardized queue (reading + manipulating) related functions to zero-based indexing.
Added argument explanation in remove_from_queue, play_from_queue.
Merge pull request #103 from petteraas/zero_based_queue

Standardized queue (reading + manipulating) related functions to zero-based indexing
Build and upload wheels