Changelog out of date for 3.*.

[ianjosephwilson]

Given the fragility and importance of the latest update, could the CHANGELOG at least be updated for 3.0 and the minor releases since then? Ie. 3.0.1, 3.0.2, etc. I can browse through the commits but it is hard to tell which changes are important and which are not.

[kdaviduik]

Fixed by #917.