While it appears to have already been implemented a couple months ago, it has come to my attention that the patch in effect is still 1.0. It has now been corrected, you can immediately tell if it’s v1.1 from the title screen. It should not affect your progress in 1.0, the changes are minor. You can see the readme to know them.

Relevant Link: (http://www.romhacking.net/hacks/1188/)