Finish the impl of the knockout filter
Finish the impl of the knockout filter

misgeatgit/atomspace,inflector/atomspace,inflector/atomspace,misgeatgit/atomspace,rTreutlein/atomspace,misgeatgit/atomspace,AmeBel/atomspace,AmeBel/atomspace,rTreutlein/atomspace,misgeatgit/atomspace,ArvinPan/atomspace,inflector/atomspace,ArvinPan/atomspace,AmeBel/atomspace,AmeBel/atomspace,rTreutlein/atomspace,misgeatgit/atomspace,ArvinPan/atomspace,rTreutlein/atomspace,ArvinPan/atomspace,inflector/atomspace,rTreutlein/atomspace,inflector/atomspace,AmeBel/atomspace