Cli options

[sandre1]

work in progress on migratus #240

• 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

what i have added so far

• added CLI interface to migratus (cli.clj)
• programatic configuration for JUL, to display only the log message, less noise.
  The logger is configured to print only the text message, without timestamp.

The work is in progress, so be gentle :)
I need some reviews from you guys if you have the time.
Thank you.

[yogthos]

Overall looks good, I added a few small nitpicks, but otherwise I'm happy to merge this in.

[sandre1]

Hi, thank you for your input, new things learned :).
I have also refactored the set-logger-format function to a multy-arity fn.
Forward, i want to add logs for some of the migratus core actions.
From my side, it is ready to merge, i will make a PR with the other stuff.

[yogthos]

Great, should I push a new version up to Clojars or would you like to wait for the other PR?

[sandre1]

Great, should I push a new version up to Clojars or would you like to wait for the other PR?

I think it is better to wait for other PR with complete, tested functionality. thank you.

[yogthos]

Sounds like a plan!