Hello :)

What

While implementing this plugin into our project, I found that Entities.skip is very hard to maintain.
Therefore, I'd like to implement include which works completely opposite way from skip.

Background

We are currently just replacing hard-coded entities with CreateAPI generated entities, but of course, it is difficult to replace hundreds of entities at once. Therefore, we plan to replace them gradually. In this context, include is much more useful than skip.

Changes

• Renamed skip to exclude to provide a kind of consistency with include. If you have any other suggestions, please :)
• Added include
• Throw error when both of include and exclude have value.