Just out of curiosity, what is the difference between the "Testing" version and the "PreRelease" version of JField? (I understand these are not recommended for end users.)
The "Testing" version usually is almost equal to our internal development version. The difference is that the "Testing" version passed our automatic express tests.
Usually we don't use "PreRelease" except when we almost ready to release a version. We froze changes for the version and place the version to "PreRelease".