There seems to be a print here that is causing BOOM to spam chat when I cast Explosive Shot. Is there any way to remove this in the options? I couldn't find anything. I am open to doing a quick PR to make this easier for you.

Ah, yikes. I know exactly what this is -- left over debug code from Marksmanship development. I'll clean that up and include a fix in the next release (probably tonight). Thanks for the report!