Merge tag '0.4.2' into develop

criterium 0.4.2
Updated version for next release cycle
Rename an incorrectly named test

Rename a test wrongly named with the same name as a previous one that
caused the former not to run.
Add option to suppress jvm option warnings
Push overhead estimation into benchmark*

This restores the ability to simply use benchmark and quick-benchmark to
obtain raw benchmark results data.

Closes #23
Updated project.clj, release notes and readme for 0.4.3
Merge branch 'release/0.4.3'