Command Groups

[PenguinBoi12]

This PR add command groups, a way to organize related commands under a common namespace. Various important changes have been brought to the core Bot, Command and Context class.

Example

Instance group commands

@bot.group()
async def math(ctx):
    pass

@math.command()
def add(ctx, a, b):
    ctx.reply(f"{a} + {b} = {a + b}"}

@math.command()
def subtract(ctx, a, b):
    ctx.reply(f"{a} - {b} = {a - b}"}

Usage:

!math add 2 5
2 + 5 = 7

!math subtract 2 5
2 - 5 = -3