Radim,
To start with you would be better looking here
https://github.com/pgjdbc/pgjdbc for the code. And the number of
commits.
When we suggested that you "do it yourself" this is in the spirit of
open source where you give back.
You certainly aren't compelled to by any means but you certainly
leveraged a huge amount of work to your benefit. But it's your karma.
Dave Cramer
dave.cramer(at)credativ(dot)ca
http://www.credativ.ca