$15 Tier - the name has changed slightly, but it's the same reward

I've changed the $15 "Full Game (One Time Purchase)" tier name to "Full Game (Permanent Access)".

Nothing has actually changed!  That's just to hopefully make it clearer to people that Patreon works on a monthly system and you have to unpledge if you don't want to continue to be charged.  As always for the $15 tier, you only have to buy a copy once -- you can remove your patronage after  your purchase has been charged and continue receiving builds through the Researcher Intranet.  

Of course, leaving the pledge active for more than a single month does support development and is much appreciated!