Merge tag 'sparks-1.6.13' into develop

1.6.13
Import the debian LSB release mini-module. Without this, the LSB detection won't work inside a virtualenv, which is perfectly normal but is a pure pity.
use the contrib `lsb_release` module to really detect LSB, even when inside a virtualenv.
add a handy shortcut in the form of `sparks.platform`. I use it everywhere and this will simplify my imports.
bump version in setup.py
Merge branch 'release/1.7'