Let's you use the chat as a Lua console.

Usage
/lua <command>

Supported:

Assignment:

/lua a = "Hello World"
	>a = Hello World

Value check:

/lua a
	>Hello World

Function calls:

/lua echo(a)
Hello World
	>nil

if/for/do/while/repeat blocks:

/lua for i=1, 5 do echo(a) end
Hello World
Hello World
Hello World
Hello World
Hello World
	>nil

TODO
Better error string format.