Overkill weapon names
I see that the go rewrite is already using the new weapon names but this code still has the old ones. Do you have plans to update these too or do you want to maintain compatibility with 0.8.2 servers until 0.8.3 is out? I don't think any 0.8.2 servers have proper overkill anyway since 0.8.2 doesn't even have the ruleset config files and it was pretty hard to find the right config (including weapon balance, physics, etc.) back then.