Feature Request: Some log control

[oblitum]

The logging messages are useful most of the time, but in some specific situation I wished I could disable them (through log level setting). For example, I wished to disable notify level messages for a modd instance I'm running as a REPL setup. I wished all the >> done (9.217413ms) and 22:10:37: prep: cargo build -q --color=always removed, because I just want the build output in the screen alone.

[oblitum]

watchexec is an alternative simpler tool without logs (e.g. watchexec -ce rs -- cargo build -q).