Fix inconsistent support of -h flag #72
Description
- -h command not found, -h as a flag is a pretty established standard that I would expect to be supported. output identical to --help
i. After I typed this I realized -h does work after a command (like itp itwin -h but not at the top level...
ii. It does not work after a command sub-command like itp itwin create -h so very inconsistent feeling
As written above, current support for -h flag is inconsistent and should be fixed