Release v3 (#31) * Release v3 * Update readme
Fix bug in ControlValue (#25)
Merge pull request #22 from jszroberto/include-control-result-in-cand… …idate Add control clean value to candidate observations
Prepare for v2.1.0
Readme: add codecov.
Merge pull request #15 from jelmersnoeck/jelmer/release-notes Changelog: add release notes.
Merge pull request #9 from jelmersnoeck/jelmer/contributing-guidelines Contributing: add guidelines.