Updated function_exists docs.
Merge pull request #198 from EntityReborn/master

Add extension_info, as well as require new extensions to provide a version.
Added LATEST to CHVersion.
Changed the core to "Core" from "CommandHelperCore."
Reset the queue during startups.
Temporary fix for missing getVersion in older extensions.
Added read_gzip_binary(). Works like read, but reads in gzip files.
Add catch for NegativeArraySizeException. Fixes 2886.
Add better error message if dynamic labels are used.
Allow only 1 argument in while().
Changed default of config.txt to aliases.msa.

This shouldn't have any issues with existing installations. The existing preference will be respected, and therefore the existing file will be used.
Added basic extension development document.
Merge branch 'master' of github.com:sk89q/commandhelper
Added case/default syntax to switch.
Fixed example error.
Poke tests to know about functions with the new loading system. Bash tests still fail, searching for a solution.
Fixed NPE with msg([..]).