How to extend the tool/actively develop a new feature

[gngrchrl]

Hi!

I am trying to extend sqlc a bit for some issues I have (and others too, there are open issues). However after looking at the code and trying to figure out what exactly happens where and how.. I am confused.
How would you suggest to go on about implementing changes/fixes/features and understanding how sqlc works? Is there any other documentation than this as the code has close to zero?

Thanks!