[CON-19] Add function to get a time series for KEY in RECORD
[CON-19] add some comments to ChronologizeTest
Merge remote-tracking branch 'upstream/develop' into develop
[CON-19] refactor chronologize to make it atomic, refactor unit test
[CON-19] some more refactoring on chronologizing
Merge pull request #4 from knd/develop

[CON 19] Introduce chronologize method that returns a time series for KEY in RECORD