Type upgrade

[doncem]

• simplified default types registration
• introducing container for type instantiation
• default types are singletons
• type upgrade is backwards compatible
• allowing to register namespace lookup for simplified ConcreteType usage \Without\Absurdly\Long\Custom\Namespace\For\The\Annotation\Classes

personally, not fancying the addition of the public function to the ParserInterface, kind of breaks the abstraction "parser should not know a thing about the types". but the fact of having a lookup is very helpful

[coveralls]

Coverage decreased (-38.2%) to 51.84% when pulling 1a919ac on doncem:type-upgrade into 675bc47 on marcioAlmada:master.

[coveralls]

Coverage increased (+1.03%) to 91.104% when pulling 22eb0ed on doncem:type-upgrade into 675bc47 on marcioAlmada:master.

[marcioAlmada]

Hi, @doncem! The overall idea looks fine to me. Do you need any help?

[doncem]

repo needs unit test upgrade to allow php5 and php7 support in travis. for php7 it picks up PHPUnit v6.x which only supports this version. you can see in build report.

could work on a hack to apply in this PR but lacking time last couple days and probably best to make more solid decision and code change so minime/annotations could support all these versions

[marcioAlmada]

Ok. I'll try to add phpunit as a dev dependency ASAP there is time, so we won't depend on Travis environment anymore.

[doncem]

There is a "one-liner" solution: class_alias('PHPUnit\\Framework\\TestCase', 'PHPUnit_Framework_TestCase');. I'll leave it up to you to decide and afters I can rebase the PR