Support for PHP < 5.4

Hi!
I really love your plugin! Works great!!

There is only 1 little problem.. I use it on a webserver where the PHP version is lower than 5.4.. So this means that public $variable = []; is not working.. If you write it like public $variable = array(); It works like charm.

I replaced everything in the code to make it work.. But i guess when i update the plugin everything will be overwritten?