Here is the current method to bypass the patreon code. The dev, annoyingly, has the code automatically update every 4-6 minutes. Asking people to DM it to you is quite pointless.
For some reason I couldn't find the topic until today, and independently did most of this already. But instead of changing all the flag values, I flipped the cheat code logic around line 645 so you enter any incorrect code to get it:
If anyone is wondering why the cheats don't work, it's because the game version is NOT 0.15.4 . It's 0.15.1 . It'll only show the ACTUAL version AFTER you've extracted it.