Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #2328919 by Mile23, YesCT, tim.plunkett: Remove () from a bunch of @covers definitions in PHPUnit

Issue #1837388 by tim.plunkett, dawehner, Wim Leers: Provide a ParamConverter than can upcast any entity.

Issue #697760 by sun: Replace getInfo() in tests with native phpDoc + annotations (following PHPUnit).

Issue #2250239 by dawehner | sun: Remove needless ContainerAware dependency from ParamConverterManager.

Issue #2185831 by tim.plunkett: Split up ParamConverterManager and stop throwing NotFoundHttpException.

Issue #2103145 by tim.plunkett, damiankloip, neclimdul: Fixed ParameterConverter mangles raw values.

Issue #1943846 by fubhy, effulgentsia, tim.plunkett: Improve ParamConverterManager and developer experience for ParamConverters.