Add getter methods to TextPosition

I've inherited code in my department that created a local copy of TextPosition and broke it's immutability. I'm trying to refactor this code and use the core Apache implementation and I understand the need for TextPosition to be immutable, but can getters be added to provide read-only access to the class's fields?

We have custom code that does comparison of endX/endY values to determine if there are overlapping characters and other features. In our application, we also have a swap feature where we need to create/clone new TextPosition instances with minor differences between an existing TextPosition instance. Since there are a lot of fields that are required by the constructor of the new instances, but can't be read from an existing instance, we need a way to access these fields.

There probably should also be an override for equals() and hashCode().