Remove dependency on JUnit for tests.

[danielbodart]

Instead support an annotation based test method marking. This could default to the JUnit annotations or maybe a TotallyLazy annotation.

This would be a feature subset much like the removal of stringtemplate in utterlyidle.

Minimun feature set:

Test annotation on method used to signal test method, this would also stop needing naming convention to find tests.
Ignore annotation
Test Constructor and AutoClosable to replace before and after annotations.