No rate limiting for IRC commands

[nicolas17]

I have a teleirc bot that bridges a dozen freenode channels. I recently tried a newer version of teleirc and it can't connect to freenode. After enabling verbose logs I found that it's not throttling IRC commands, so when teleirc connects, it sends a dozen JOIN commands at once, and freenode kicks it out of the network for flooding.

I suspect this started happening with the switch to another IRC library in 4f26402.

Meanwhile I downgraded teleirc because it's otherwise unusable for me.