Tidy up cladetime logs and warning formats

[bsweger]

Background

Cladetime was written to emit a lot of logs by default. It also emits warnings that are not formatted very nicely.

Definition of done

Make the outputs of cladetime more user friendly:

• Default cladetime's logging level to debug
• Allow user to override the above
• Format warnings messages to avoid line numbers, etc.

[bsweger]

This would be nice to have, but I'd put it lower on the priority list