tests: added missing assertions
classes ArrayHash, ArrayList, DateTime, Image and ObjectMixin moved to Nette\Utils namespace.

Old classes still exist.
Framework uses Tracy instead of Nette\Diagnostics; added dependency on Tracy to composer.json
Debugger becomes wrapper over Tracy.
Framework uses Latte instead of Nette\Latte; added dependency on Latte to composer.json
tests: added FileTemplate test
Nette\Latte becomes wrapper over Latte.
Nette Framework is leaving, Nette Components are coming. So Long, and Thanks for All the Fish ♥
removed tests