Storlets/Release Branch Creation

This is a temporary procedure till we are "Big Teneted"

1. Create a patch that pins the dependencies (updating CHANGELOG while at it)
2. create the tag for the branch (Make sure your .gitconfig is up-to-date with e.g. the gpg signingkey entry):
   1. git tag -m "stable/newton tag" -s 0.3.0
3. Push the tag: git push gerrit 0.3.0
4. Create the branch
   1. git branch -b stable/newton
   2. git push gerrit stable/newton