ROM version differences

Sorry if this is the wrong place for this, but I didn't know where else to ask.

I have searched for differences between the 1.0 and the 1.1 rom, but am unable to get a definitive answer. It's been my understanding that 1.1 fixes bugs (how many and which ones are unknown) and I've been using that as a base for my hacks.

Then I get here, and everything seems to be geared toward 1.0, probably because all of the tools support 1.0... my question is why?

One of the main goals of my hacking is to squash as many bugs as possible, and one of the patches I use fixes many bugs, but also upgrades the version to 1.1, does this mean the tools will be incompatible or cause some glitches?

I'm sorry if this has been answered before, I really did search . I just feel like I need to get this out of the way before I do any more work.

Thanks,

McPhizzle

EDIT: of course after I make the post, I find a thread about this, not even buried :S