Release v0.2.0

[grobie]

We've been the current master in production for a while and it's pretty stable. Can we get a proper release including tarballs for each arch/os? I'm happy to take this over if you need help if you add me as collaborator to this repository.

[cagedmantis]

It's definitely time for a new release. I will reach out via irc to talk about the canonical release process.

[anarcat]

ping it seems that 0.2.0 was somehow released, but that has been a while already, and new commits have accumulated since then... it would be great to have an updated version again!

[anarcat]

ping again! there hasn't been a release over a year and while the number of commits is low, there are some important fixes in there including #50 and others. it would be great to have a (say) 0.3.0 release instead of the current -dev release...

[SuperQ]

Closing in favor of #55 (0.3.0)