Added "conflicts" to manifest section.

rp.conflicts is either a string or a list of mods this mod is incompatible with. If any of these incompatible mods is present, the mod that contains the conflicts entry will not be loaded.

Also some formatting.
Require mods to return true (or any value) at the end.

Because _host:require does not properly propagate the error back to lua, the whole pcall deal is pretty useless.
Increment version.

I should have done that three commits ago :X