Housekeeping release

Sorry all, it's been a long time between releases. I have small children now!

Biggest changes are:
#133 Fix missing newline on exported files @gnarlex
#109 Export ints without quotes @mniak
#70 Support keynames starting with export @hairyhenderson

I'll try and come back and amend the release with other PR contributors, but thank you to everyone who sent patches in.

Next release will include multiline variables.