I have Unlimited Chisel Works (and it's Binnie's Mods addon) and my game output fills up with messages like

[19:09:46] [main/INFO] [Chisel]: Received IMC from unlimitedchiselworks, of type add_variation.

This causes MultiMC (my preferred launcher) to stop watching the log before the game is even loaded, as it only watches up to 100,000 lines. A configuration option to disable these messages would be very useful.

Here is an example output log (You'll have to view raw to see the whole thing as it has been truncated to be viewed on Gist)

Thanks!