Allow utils.maybe_coroutine to take any arguments.
Allow utils.maybe_coroutine to take any arguments.

imayhaveborkedit/discord.py,Harmon758/discord.py,Rapptz/discord.py,rapptz/discord.py,khazhyk/discord.py,variablehair/Eggplantato,Harmon758/discord.py,mgardne8/discord.py