Refactor of Zend\Db\Metadata for 3.0.0

[ezimuel]

This is a task for refactoring Zend\Db\Metadata using the type hints of PHP 7.2. You must work on the 3.0.0 branch.

If you change the API you should report it in the /3.0.0.md file.

Note: it's quite difficult to provide this code refactor without changing other classes. That means you should provide the refactoring without pass all the unit tests. In this phase is only important to have the unit tests running, so we you must focus only on fatal/parse errors.

[arueckauer]

@ezimuel I have a general question on what the best way it is to handle upcoming questions and issues. While refactoring I had a few questions and mentioned them in the PR comment.

Is this fine or would you prefer a discussion elsewhere, a separate issue, or ...?

[weierophinney]

This repository has been closed and moved to laminas/laminas-db; a new issue has been opened at laminas/laminas-db#16.