I would consider my mod as a "fix what others broke and never fixed mod" and my wish would be that it will be obsolete eventually (not gonna happen). That this can happen I especially licensed the mod under MIT so that everyone is allowed to reuse my stuff and fix there mods. Most of the stuff is just a changed category or a fixed misspelling or in your case a added lab item. When someone just fixes there speling mistakes or combines categories I wouldn't require a notice that I changed this as it is very minor and except they copy my code it isn't generally required. In your case you would probably just copy the lines that added the items to the lab mk2. I am by no means a lawyer but if you copy the code, add a comment above and below the lines that the original source is my mod and it is licensed under MIT everything is fine.
About the patch: I will gradually add stuff I find out of place or that need fixing and now it is your decision if you want to integrate this into your mod or just redirect them to my fix mod and don't worry about angel.