Bump to 0.7a.
Bump to 0.7a.

cysp/libzip,projedi/libzip,projedi/libzip,cysp/libzip,cysp/libzip,projedi/libzip,det/libzip,JanX2/libzip-git,det/libzip,det/libzip,det/libzip,JanX2/libzip-git,projedi/libzip,cysp/libzip