"Book" link now points to "Books" wiki page
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.
Improve documentation on comparison operators.
More improvements to opCmp docs.

Also, improve wordings to other parts of opEquals / opCmp docs, and add
missing $(D...) macros for D symbols in various places.
Announce v2.066.0 beta 6
Merge pull request #620 from quickfur/opCmp

Improve documentation on comparison operators.
Fix recursive opCall (oops)
Remove unexpanded CODE_HIGHLIGHT macro in comment

Macros in comments are not expanded (https://issues.dlang.org/show_bug.cgi?id=13211).
Fix typo.
Merge pull request #622 from quickfur/opCmp2

Fix typo in pull #620
Announce v2.066.0-rc1 availability
Merge pull request #621 from ntrel/patch-1

Remove unexpanded CODE_HIGHLIGHT macro in comment
Merge pull request #619 from ntrel/mix-opcall

Fix Issue 12241 - Document change to static opCall
Merge pull request #610 from JinShil/patch-1

"Book" link now points to "Books" wiki page