Basic HTML5 Storage for GameMaker Studio 2.3

Created initially for my Opera GX Game Jam entry.

Lets GameMaker read and write from a web browser's local storage and session storage as a JavaScript "pass through."

Function	Help
html5_localstorage_*	Functions relating to the local storage of a browser
html5_sessionstorage_*	Functions relating to the session storage of a browser

Function	Usage	Help	Returns	MDN (for JS)
*_save	*_save(string_key, string_value)	Save a string value to the associated key	Nothing	Docs
*_load	*_load(string_key, string_default_value)	Loads a string value from the associated key, or the default value given if missing/undefined	A string	Docs
*_remove	*_remove(string_key)	Removes a key/value pair	Nothing	Docs
*_key_at	*_key_at(index)	Get a key's string from an index into storage	A string	Docs
*_clear_all	*_clear_all()	Clears all key/value pairs from storage	Nothing	Docs
*_get_length	*_get_length()	Gets how many key/values pairs are in storage	A number	Docs
*_exists	*_exists()	Checks to see if storage is accessible by setting and removing a testphrase into storage. Only needs to be checked once and not before every other call	Boolean/number	N/A

The help in the GameMaker IDE is also set, so context help will appear.

The extension only copies to HTML5 targets and does nothing on every other platform.