0.5.1: Support command argument/option completion, when command short form is used
This release fixes the completion handler to honour Symfony Console's default handling of unambiguous namespaced command abbreviations. The following are now equivalent (previously only the first would return results):
program deploy:run TAB
program d:r TAB
program de:r TAB
program d:ru TAB
Completions of command names that are not "namespaced" using colons are not affected by this change.
Thanks to @aik099 for this.