-Added more elements that can be cloaked: div, aside, main, nav, header, footer

-Added context menu items that mirror the options in the popup
-Cleaned up the code that handles hashing to only consider container elements
-Removed cutesy attempt at recursion when hashing

-For now, disable destruction of loading interval until I figure out a consistent way to detect page naviation in plain JS

-New dedicated attribute to store hashes for persistence of element choices, in lieu of using the id
-More cleanup when disabling the cloaker functionality
-Updated icons to be the left end of an HTML element bracket, but made to look like a hooded cloak.
-Updated the hashing algorithm a bit in a better attempt to determine element uniqueness