Removing bogus old files. Added a qa.html file for checking functionality after updates.
old version removed.
Removed index.yaml - leftover from previous versions that
used a persistent memory story.
https://developers.google.com/appengine/docs/python/config/indexconfig#Python_About_index_yaml

Currently, everything is in memory.
whitespace.
Some initial tests, which go as far as making sure
we have examples and schema file, that schema file has XML-style balanced tags,
and that we can parse it, at least to the extent of finding a "Thing" unit.
Added some more introductory text.
Bundle of tests to verify the core API.
Adding subproperty() and superproperty() methods on a unit node.
Also inverseOf() for property units, which will take care of looking
for the assertion in either direction, since it is symmetric.
Documented inverseOf and supercededBy properties, and moved Class and Property under Intangible where they belong.
Added tests for super/sub property relationships, and inverse properties.
Replaced assertEqual usage with assertTrue and assertFalse.
Now allows that we might have multiple sub-properties and super-properties.
Removed a mistaken reference to 'answer' property; this should have been suggestedAnswer.
Updated subPropertyOf accordingly.
Added subPropertyOf from Action-related properties that specialize 'participant'.
Updated - previous tests used mistaken old name, 'answer' instead of the correct 'suggestedAnswer'.
Added more subPropertyOf assertions to match those we already make in the textual comments.
Added super/sub properties. Code has some redundancy but reasonably clear.
TODOs
Adjusting so that we only show sub-properties in the first section.