Document history

Last updated: June 15, 2021

This version of the guide replaces and obsoletes all previous versions.

The guide is continuously improved. Our documentation source repository is open for review; to learn about everything that has changed recently, begin by taking the repository’s pulse.

Highlights of the most recent changes are described in the table below:

Revision Date

Summary of Changes

November 22, 2018

January 8, 2016

November 20, 2015

July 23, 2015

June 25, 2015

June 18, 2015

June 1, 2015

  • First draft with complete content.

May 22, 2014

  • Begin document development.