propagate change from https://github.com/epfl-dlab/flows/pull/91

propagate changes

remove verbose (#5)

Change the path of the CC_flows to remote.

Add LC_code and make everything run again.

Add early stopping for debugging on passed tests. Propagate minor changes to default human_message keys.

Fix bugs, clean code, bring everything up-to-date and standardize a bit more.

Add an abstract CodeTesting Flow and working CF_CodeTesting Flow.