From our last official v3.2.3 release (three and a half years ago!), this major release includes all changes in the v4.0.0-alpha.1 and v4.0.0-alpha.2 releases, plus the changes listed immediately below. Generally, this represents a large overhaul of all three books and their code, and will require large changes to any code you've based on the prior v3.2.3 version. Going forward, we plan to avoid such massive, long-running development branches, at the expense of more frequent minor and major releases.

There's still a fair amount of work remaining on book three, which we'll work on after this release.

Common

• New -- Add explicit std:: namespacing almost everywhere (#1487)
• Change -- Use delegating constructors where helpful (#1489)
• Change -- Standardized our use of begin/end standard C++ iterators (#1551)
• Fix -- CSS reformatting and fixes (#1567)
• Fix -- Add workaround for image and figure captions using latest Markdeep versions (#1583)
• New -- Add DOCTYPE declaration to all Markdeep documents (#1566)

The Next Week

• Delete -- Remove debug output code from constant_medium::hit() function (#1495)