Heptapod 0.19 is the new stable

Merged default branch into stable and fixed CI image

--HG--
branch : stable
7 jobs for branch/stable in 21 minutes and 51 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Lint
passed flake8 #166013

00:00:16

 
  Test Heptapod
passed docker-inside #166014

00:18:40

passed docker-native-inside #166017

00:18:10

passed docker-native-remote-0 #166018

00:17:32

passed docker-native-remote-1 #166019

00:21:35

passed docker-remote-0 #166015

00:18:09

passed docker-remote-1 #166016

00:21:25