Include a default set of aliases.
Use DOKKU_ORIGINAL_COMMAND in usage messages.
Merge git-* into a single git:shell command, using aliases.
Allow printing help for a single plugin.
Use an underscore as the default command.
Add an alias plugin to manage the ALIAS file.
Export a PLUGIN_ROOT variable.
Move the "shell" command into its own plugin.
Use an inputrc to disable (useless) file completion in the shell.
Make 'test_deploy' use the short version of the url command.
Fix some quote expansion when running over ssh.