Replacing Exceptions with `_doing_it_wrong`

[Chrico]

Since this package is designed to fit into a WordPress-envoirment, Exceptions could lead to broken sites (WordPress does not handle Exceptions by default).

Exception in set_options
Maybe we should change the behavior of set_options from throwing an InvalidArgumentException to a more "wordpressy"-way by using _doing_it_wrong() and not setting the given configuration to the $options-array.

Usage of _doing_it_wrong in Inpsyde\Filter\WordPress
The other point which has to be discussed is the _doing_it_wrong in Inpsyde\Filter\WordPress folder, when a incorrect $value-type is given. I think just returning the value and triggering a _doing_it_wrong seems to be ok, since WordPress does nothing (no error message, just continue with something similar or even break) against wrong values.

[dnaber-de]

Do you really want to bind all these nice logic to a WordPress-only content? The question is, whether you want to force developers to deal with this exceptions. For what I see, the most exceptions are about logical errors, meaning these should lead directly to a change in the client code.

However, maybe it's somehow possible to handle the exceptions internally of Inpsyde\Filters within a wrapper that then delegates these exceptions to _doing_it_wrong().

[Chrico]

Thanks for your feedback @dnaber-de !

I like the "throw Exception if something is not correct"-approach. The "wordpressy"-way is too soft, hard to debug and not really secure ("oh something wrong is given..no problem, i just continue with something similar/else"). WordPress does not stop the program when something is really incorrect.