Don't load modules that are already loaded
Don't load modules that are already loaded

Previously, if a user autoloaded commands more than once, commands that were already in the command map would be readded. 

If the module list already contains a module with the same type as the module being loaded, it will not load the new instance of this module.
LassieME/Discord.Net,RogueException/Discord.Net,Confruggy/Discord.Net,AntiTcb/Discord.Net,Joe4evr/Discord.Net