Release usg-opensim-072919

Back to some sanity. Plus imviaemail support.

Mergin upstream changes up to 04/11/2019 for hotfix release

Release 0.9.0.1

Start of 0.9.0 development

Change version flavour to releas

Change flavour to RC1

Change 0.8 post fixes to 0.8.0.2 release

Change 0.8 post fixes branch to version 0.8.0.1 with release flavour.

Change 0.8 flavour to release

Change release flavour to rc3