Create mangelwurzel sproutlet
Compress SAS parameters that contain full messages
Update cpp-common
Add in 3GPP constant
mangelwurzel-as
Add comments to mangelwurzel implementation
Add comments to mangelwurzel definition
Add comments to mangelwurzel UTs
Remove gemini_enabled and memento_enabled options - always enable them
Add submodule updates
Merge pull request #854 from Metaswitch/sto1001

[Reviewer: Alex] Add in 3GPP constant
Take new gemini and memento
Merge remote-tracking branch 'origin/dev' into memento-iss21
Merge pull request #856 from Metaswitch/memento-iss21

[Reviewer: Alex] Remove gemini_enabled and memento_enabled options - always enable them
Markups
Merge remote-tracking branch 'origin/dev' into mangelwurzel
Merge pull request #855 from Metaswitch/mangelwurzel

Reviewer MIRW: Mangelwurzel
Create Mangelwurzel.md
Mangelwurzel.md markups
Merge pull request #858 from Metaswitch/mangelwurzel_docs

Reviewer MIRW: Create Mangelwurzel.md