Avoid processing files multiple times.
Avoid processing files multiple times.

See: https://github.com/miickel/gulp-angular-templatecache/pull/36

samouss/gulp-angular-templatecache,RobertoUa/gulp-angular-templatecache,miickel/gulp-angular-templatecache,AOEpeople/gulp-angular-templatecache,stevemao/gulp-angular-templatecache,eanakashima/gulp-angular-templatecache