Simulate setup for more options

The options discussed in Issue #22 have been added to
simulate. The changes have not broken previous code, but
the new code is untested.
Simulate with post-proc options

Simulate's new post processing options have been debugged
and tested. Option validation still needs tests.  Otherwise,
this Resolves #22.
v1.2.0 release.

See RELEASENOTES. The simulator can now optionally post-process
the results by tracing out work space and measuring quantum
states to get classical output.