Limnoria/plugins/Alias

This plugin allows the user to create various aliases to other commands
or combinations of other commands (via nested commands).  It is a good
idea to always quote the commands that are being aliased so that any
nested commands are not immediately run.

Basic usage
-----------

Add an alias, `trout`, which expects a word as an argument

```
<jamessan> @alias add trout "action slaps $1 with a large trout"
<bot> jamessan: The operation succeeded.
<jamessan> @trout me
* bot slaps me with a large trout
```

Add an alias, `lastfm`, which expects a last.fm user and replies with
their recently played items.

```
@alias add lastfm "rss [format concat http://ws.audioscrobbler.com/1.0/user/ [format concat [urlquote $1] /recenttracks.rss]]"
```

Note that if the nested commands being aliased hadn't been quoted, then
those commands would have been run immediately, and `@lastfm` would always
reply with the same information, the result of those commands.