Logging

Implement some logging stuff!  The only actual logging calls I added were:
  -One in the haas.api.handle_client_errors, which logs each api call twice
  -One in startup, which warns if the log level was set badly.

Also clean up CLI output
All right.  I'm still not a huge fan of that format, but it's certainly clearer than what I'm doing, so I'll do that.