project:clean can be local only
Pass through -v, -vv, -vvv, -q, and --concurrency to drush make (squash merge #116).
Fix fatal error when building after get.
Merge pull request #128 from pjcdawkins/clean-local

project:clean should be local
Make the drush command recognize the custom alias name.
Merge pull request #130 from pjcdawkins/fix-branch-wait

Provide a more stable 'branch' command.
Fix git command intended to create AND checkout a branch locally.
Improve checkout command usability.
Checkout: offer a choice of environments.
Improve choosing environments in get command.