RangeExtra version 10^-20 is officially out. It consists of a small and hopefully growing number of ranges that didn't make it into the new Phobos that I've gotten working reasonably well and I feel eventually belong in Phobos.
Docs / What's there: http://cis.jhu.edu/~dsimcha/rangeextra.html Code: http://dsource.org/projects/scrapple/browser/trunk/rangeextra/rangeextra.d License: Dual licensed, Phobos license or BSD (Tango style).