Cleanup ExtensionContext Namespace API

[sormuras]

Overview

This PR removes the method getStore() from the ExtensionContext interface and renames Namespace.DEFAULT to Namespace.GLOBAL.

---

I hereby agree to the terms of the JUnit Contributor License Agreement.

---

Definition of Done

• There are no TODOs left in the code
• Method preconditions are checked and documented in the method's Javadoc
• Coding conventions (e.g. for logging) have been followed
• Change is covered by automated tests
• Public API has Javadoc and @API annotations
• Change is documented in the User Guide and Release Notes
• All continuous integration builds pass

[kcooney]

I think there is sample code in the usage guide that uses getStore()

[sormuras]

A full-text search for getStore() yields no result and all 25 occurences (in 13 files) of getStore do not refer to the deleted method.

Do you have a specific usage guide sample in mind?

[sbrannen]

This has been merged into master.

Thanks, guys!