removed (commented) test #0286 (@value is no longer considered for HTML5+RDFa), and 'moved' the property copy tests (321-327) to the 'main' branch of testing (property copy is a required feature).
New test on @content overwriting the content of the <time> element; changed 0278 which gave a higher priority to @datetime over @content (and that has changed)
Added Test 0329: Recursive triple generation