Add Client.move_channel to change channel positions.
Add Client.move_channel to change channel positions.

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