Add rate limiting for karma commands

[JoshAtticus]

Not happy to see I had been downvoted 11,923 times while I was in bed, while I am muting everyone who abuses karma commands permanently, I think it's a good idea to say, make it so you can upvote/downvote max 5 times a minute. Upvoting and downvoting more than that would be considered mass upvoting/downvoting.

[theycallhermax]

was already in my todo list, but i could work on this now

[JoshAtticus]

I will stop hosting MDWalters125 if you're going to be that rude to me

[theycallhermax]

ok i'll stop

Message ID: @.***>

[JoshAtticus]

Hey can you un mute me on mdbot or I will stop hosting

[theycallhermax]

i did

Message ID: @.***>

[theycallhermax]

ok i think it's about time i work on this now

[JoshAtticus]

@mdwalters

[theycallhermax]

h