project:clean can be local only
Provide a more stable 'branch' command.
Merge pull request #128 from pjcdawkins/clean-local

project:clean should be local
Limit environment IDs to 32 chars.
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.
Remove override of doRun() so the help option works.
Merge pull request #138 from pjcdawkins/fix/help-option

Remove override of doRun() so the help option works.
Add --yes and --no options, replacing --no-interaction.

Replace 'dialog' with 'question' throughout.