Evaluate v4 of the Core Reporting API

[konklone]

There's been an update:

• https://developers.google.com/analytics/devguides/reporting/core/v4/
• Migration guide: https://developers.google.com/analytics/devguides/reporting/core/v4/

The key features are:

• Metric expressions

  The API allows you to request not only built-in metrics but also combination of metrics expressed in mathematical operations. For example, you can use the expression ga:goal1completions/ga:sessions to request the goal completions per number of sessions.

• Multiple date ranges

  The API allows you in a single request to get data in two date ranges.

• Cohorts and Lifetime value

  The API has a rich vocabulary to request Cohort and Lifetime value reports.

• Multiple segments

  The API enables you to get multiple segments in a single request.

[thekaveman]

A key difference that will affect existing reports is the sort parameter, which has changed to orderBys