FU4.1RC3 - Use of fluint classes causes compile errors

FlexUnit developers,

Has FlexUnit now ended its backwards compatibility with fluint?  Wth older versions, I could compile the following successfully:

    import net.digitalprimates.fluint.tests.TestCase;

Now, with RC3, I am getting a compile error

C:\EclipseWorkspace3.5\nls.collation_tests_unit\Source\Flex\com\nls\collation\i18ntests\te stcases\Base.as(5): col: 41 Error: Definition net.digitalprimates.fluint.tests:TestCase could not be found.

    import net.digitalprimates.fluint.tests.TestCase;

                                            ^

Thanks,

Trevor