We have a couple of stale branches, named a bit chaotically, I��d like to rename them in a good way, but I don��t remember what they are about :)

The numbers below (behind | ahead) are according to the current stable pharo9 branch.

- headless has already the new tree organisation with cmake

- dev-7 and pharo branches have the old tree organisation, dev-7 has some bugfixes when comparing to `pharo`

- Cog has the original imported version from monticello

Maybe we can have some naming convention for branches?

- pharo-[version] to denote major development version branches

- feat/[feature] for feature branches if needed

Then the four above should be renamed accordingly. Something on the lines of...

- Cog -> rename as pharo-0?

- pharo -> can be removed

- dev-7 -> pharo-1

- headless -> pharo-2