test: rename src/example to src/test in prep. for real tests
tdd.Runner: compact JsDocs
tdd.Runner: use goog.bind instead of 'self' hack
ActualValue+Negates: expectations should return test suite to allow chaining.
AnsiFormatter: suppress timestamps when constructing underlying log records.
matchers: use assertions when an array-like arg is expected
test: add test suite exercising matchers.