After the League's Container package has been reintroduced, all the
code that implements the dependency injection mechanism in woocommerce
can be brought back as well.
1. Since our code style dictates that these be `final` methods, we shouldn't be concerned about overlap.
2. There is precedent for `init` methods as requirements before using class instances.
Since we need to maintain backwards compatibility for class constructors we should settle on using method injection instead of constructor injection. I've replaced the `Definition` class we're using with one that doesn't support constructor arguments and added a check for auto_arg addition. Note that we don't check for method existence in the extended container. This is because reflection is unnecessarily expensive and we should avoid it if at all possible.
- src/README.md largely expanded
- tests/README.md expanded
- includes/README.md added
- src/Internal/REAMDE.md added
src/README.md and includes/README.md have TODO placeholders to add
guidelines regarding to actions and filters.
Claudio Sanches
Nestor Soriano
Christopher Allford
Mike Jolley