Re: Pre-Review: Op Collapsing

Jeremy Selan <jeremy...@...>

This is now ready for a real pull-request:

Internal image-procesing ops now go through a simple optimization framework as part of Processor creation. In this first code pass, ops that are exact inverses of their neighbors cancel out and are removed.

As far as I know, this code is good to go.  The matrix collapsing is not in yet, but I dont want to sit on what I've got thus far any longer.

-- Jeremy

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