tree 427b7459e0f9cbc005a426e61ea9a6ff728c7f80
parent a06c4631b74cf6b954e50be6d545fd82654d4108
author Claudio Pacchiega <claudio.pacchiega@gmail.com> 1502845706 +0200
committer Luca Milanesio <luca.milanesio@gmail.com> 1503154462 +0100

Aggregate contributors stats by day/month/year

Adapt CommitHistogram to take care of various levels
of aggregations, including HOUR, DAY, MONTH, YEAR.

Output records include the key field holding
<useremail>[/<year>[/<month>[/<day>[/<hour>]]]]
so that consumers can understand which aggregation level has been used.

Aggregation is enabled with --aggregate --g aliases
Omitting --aggregate will default to aggregation by email which is
almost identical to previous version (except for the added field key).

Change-Id: I047a4d11e695afff56dd28a0b9c8d73e001b7782