push for psr-4: controller classes
push for psr-4: parser classes
push for psr-4: thumb classes
push for psr-4: various HTTP classes
push for psr-4: user classes
push for psr-4: template classes
push for psr-4: database classes
push for psr-4: file/image/post classes
push for psr-4: router classes
push for psr-4: cache classes
push for psr-4: config classes
push for psr-4: pgerror and spam classes