Pierre/add mirc

Fixed mirc regex
You know, looking at it a bit more, the records seem well-formed, albeit ugly, so there's no reason we shouldn't just parse the whole thing. It's possible to find the server/hostname without having to look for something that looks like a domain name.
```
/^n[0-9]+=(?<desc1>[^:]+)SERVER:(?<hostname>[^:]+):(?<portlist>[^:]+)GROUP:(?<group>.*)$/
```