Improve logging

[sandre1]

work in progress on migratus https://github.com/yogthos/migratus/issues/240

• [x] add CLI interface to migratus (migratus.cli)
• [ ] improve logging - add logs for the migratus create actions and others
• [ ] expose an API functionality to list the migrations ID-s from the CLI

[1] I have implemented a --verbose CLI option to set the log level.

[yogthos]

Overall looks good, I think the only change I'd do would be to default to info when no log level is set.

[sandre1]

Also part of improve logging (sort of :) ) i've dealt with the error in case of no config file provided.

[yogthos]

I think I'm good to merge this in unless there's anything else you were thinking of adding.

[sandre1]

For now, is ok to merge. Thank you. I will continue work on a new branch.

[yogthos]

sounds like a plan, and let me know when you think is a good time for a release