Symfony has a cool replacement to var_dump() that is similar to kint that we already use in Transvision but is more powerful as it also allows to output colored structured data to the dev server console.
* new dump() function, outputs structured elements to the SAPI (the web page if called from the web, the console if called from a script)
* helper function cli_dump() added, allows outputing debug info to the CLI from a web page
* new app/helpers folders for such functions
* app/helpers/debug.php autoloaded via composer