0.7.4

Thanks to @jfsimoneau for contributing his fix for a compiler warning inkdtree++/region.hpp

0.7.3

Addition of nix build infrastructure, fixes of warnings, latest c++ standard compatibility.

0.7.1

The latest original version of libkdtree++ as of Tue Nov 23 19:44:51 2010 +0800.
Still sometimes referred to as libkdtree++ 0.7.1+git20101123.