[Geary] Heads up: Mainline development branch renamed to `mainline`

[Michael Gratton <mike vee net>]

Hi all,

Just a quick heads-up for people who have checked out the source code 
for Geary from the git repository: As part of 
https://gitlab.gnome.org/GNOME/geary/issues/324 I've just renamed the 
`master` branch to `mainline`. Same great content (and command line 
completion prefix), snazzy new name. :)

For the moment the old branch is still lingering, but will be deleted 
ASAP, so do:

> git fetch && git checkout mainline && git branch --delete master

to avoid forgetting.

Cheers!
//Mike

--
⊨ Michael Gratton, Percept Wrangler.
⚙ <http://mjog.vee.net/>