Bump version to 1.7.13
Bump version to 1.7.13

bgamari/librepo,cgwalters/librepo,rholy/librepo,Tojaj/librepo,Conan-Kudo/librepo,rholy/librepo,Conan-Kudo/librepo,cgwalters/librepo,bgamari/librepo,cgwalters/librepo,cgwalters/librepo,rholy/librepo,bgamari/librepo,rpm-software-management/librepo,rpm-software-management/librepo,Tojaj/librepo,rpm-software-management/librepo,Conan-Kudo/librepo,rholy/librepo,Tojaj/librepo