Release 0.3

[ericpre]

It would be good to make the 0.3 release including.

• [x] #72
• [x] #59
• [x] #76
• [x] #79

@jlaehne, @CSSFrancis, @francisco-dlp, do you have time/interest in reviewing these two remaining PRs.

[ericpre]

@jlaehne, @CSSFrancis, any chance you can review #79? Otherwise I would merge it and release 0.3.