4.0.3

Total issues resolved: 6

• 125: remove unused $app->getContainer() in routes thanks to @samsonasik
• 127: Fix Slim\Psr7\Request instantiation thanks to @chunfeilung
• 128: create var/cache directory with .gitignore in it thanks to @samsonasik
• 129: move string filters of username, firstname, and lastname at User domain to __construct thanks to @samsonasik
• 130: normalize composer.json thanks to @samsonasik
• 135: Use Correct ResponseEmitter in ShutdownHandler thanks to @l0gicgate