Add note to changelog about Duration.split.
"Book" link now points to "Books" wiki page
Update docs to reflect changes to AA runtime
Fix capitalization.
Classes are now also rejected if only defining opCmp but not opEquals.
Update beta announcement to reflect v2.066.0-b4
Fix wrong link to bug chart image.

Somehow `%3A`'s got inserted into the URL, which broke it.
Image link was broken too.
Merge pull request #614 from quickfur/issue13012

Fix broken bug graph image on bugstats.php
Merge pull request #612 from schveiguy/fix12858

Issue 12858:  Document opEquals usage in AAs
Make Function Literal examples compile
Merge pull request #615 from eco/patch-14

Make Function Literal examples compile
Provide wiki link for beta testing
Merge pull request #592 from jmdavis/split

Add note to changelog about Duration.split.
Add CXREF to changelog.dd.

The section on split needs to reference core.time, and changelog.dd does
not appear to use std.ddoc, so CXREF needs to be defined in changelog.dd
so that the links to core.time work.
Merge pull request #617 from jmdavis/split

Add CXREF to changelog.dd.
Announce beta 5
Added changes per Andrei's recommendations and removed Tutorial
Fix line break when using CODE_HIGHLIGHT macro
Struct constructors and static opCall cannot be mixed

Use separate heading for static opCall section.
Fix link.