Getting started contributing to Screen

Hi there

I'm a longtime screen user, and I'd like to start contributing to the 
project, primarily because I'd really like to see bug #23637, 
"mouse-clicks in hardstatus" resolved, and I suspect that doing it 
myself might be the quickest way to make that happen.

So what I'd like, if possible, is some pointers to getting started with 
screen, any docs or articles etc.  Obviously I'm reading the source, but 
any 'getting started' docs would give me a boost and make the pretty 
tiny amount of time I have available for this, more productive.

Also, if there's anything specific that people could comment on with 
regard to the feasibility of the feature request, or specific places to 
look in the code for mouse support etc, I'd really appreciate that.  I 
expect to have to work up to this goal from some simpler areas, so any 
suggestions for a simpler feature request or bug to look at first would 
be great.

Thanks

Matt Saunders