Coming late this year, probably to coincide with 7.4 release

• class constants should live in their own storage object
• remove issues MisplacedRequiredParam, TypeCoercion, MixedTypeCoercion
• remove support for @template-typeof
• rename TFn to TClosure, ObjectLike to TKeyedArray, GetClassT to TDependentGetClass, GetTypeT to TDependentGetType
• Remove return type manipulation from AfterFunctionCallAnalysisInterface
• default to not disabling checks with UnresolvableInclude (don't disable checks when includes can't be resolved #2818)
• Added return and param types to plugin hooks
• Remove requireVoidReturnType, useAssertForType config flags
• Change default on resolveFromConfigFile to "true"