Ignoring missing functionality tests to do with isotope handling in CML.

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>
Previously disabled test now ignored.

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>
Previously disabled test now ignored

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>