add Variance and Negativity to examples3/ouq;
extend expected and sampled variance in samples and measures;
remove probneg and negativity from samples and measure, but use in tests
(as it's very derivative of pof)
Checklist
Documentation and Tests
[x] Added relevant tests that run with python tests/__main__.py, and pass.
[x] Added relevant documentation that builds in sphinx without error.
[x] Added new features that are documented with examples.
[x] Artifacts produced with the main branch work as expected under this PR.
Release Management
[x] Added rationale for any breakage of backwards compatibility.
Summary
add Variance and Negativity to examples3/ouq; extend expected and sampled variance in samples and measures; remove probneg and negativity from samples and measure, but use in tests (as it's very derivative of pof)
Checklist
Documentation and Tests
python tests/__main__.py, and pass.Release Management