Now deepen_tac can take advantage of wrappers -- including addss...
Now deepen_tac can take advantage of wrappers --
including addss...

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle