Opening issues in github is perfect. xschem has very recently been added to github, so i am learning git as i go. The sourceforge and repo,hu repositories are kept up to date automatically. The only difference in sourceforge is that there is no 'configure' utility, you have to manually cd to the src directory and edit the Makefile. being xschem a simple tool with few dependencies (xschem requires only a C89 compiler) it is not a big work, and on weird systems (old machines or unusual archs) manually editing the Makefile is still the last final -and sometimes successful- weapon.