v1.5.0
- Merge remote-tracking branch 'origin/master' a83d493
- fix weighted utility tests c4da7e1
- fix shuffle utility 8cd62ab
- add tests to bykeys utility 5501002
- split bykeys utility and add summary to it 1ef845c
- add bykeys mapper builder utility 5fdec1a
- add tests for unique utility f95ade5
- add summaries and update readme b22ba6e
- add unique utility 1366427