1.20.10 release notes.
Tweak vagrant init wording to mention charm size

Charms over 500MB won't deploy in our default vagrant images. Document
the limitation and suggested workaround in the initialization section
of our Vagrant docs.
Merge pull request #202 from kwmonroe/vagrant-max-charm-size

Tweak vagrant init wording to mention charm size
Rename categories to tags as per design.
added notes on en-GB
Merge pull request #203 from castrojo/rename-to-tags

Rename categories to tags as per design.
Merge pull request #200 from sinzui/1.20.10-release-notes

1.20.10 release notes.
Merge pull request #204 from evilnick/contribs-update

added notes on en-GB - LGTM evilnick.  nice to see your world domination plans progressing.