Draft set of intial combiators.
Work on predicates...testing.
Tests and refinements on combinators.
Further integration of transfer combinators.
Removed stand-alone 'predicate'
'Fix' renamed to 'While' better reflecting its actual behavior.

Some resource warnings fixed.
Fixed more resource close warnings.
Fixed test.
Removed x/y from aggregator.
Generalizing 'diamond' into 'fan'
Testing...
Removed Diamond. Fan is more general.
Focusing on a single 'resources' location to get the default renderer.
DRAFT ISO contours with transfer combinators.
Fixed test case.