Version 1.0.26 Released

Highlights for this release include:
* GIL 2.0 release! (GIL was recently accepted as a Boost library; congratulations to the GIL team!)
* Addition of the poly<> class, allowing for a generic means of specifying runtime-polymorphic objects based on a provided concept specification.
* algorithm.hpp was completely refactored into smaller, more digestable algorithm subfamily headers
* Widget implementation improvement (primarily for the list widget) including supporting code in selection_t and sequence_model_t.
* For more information and more changes see the Release Notes

Blessings,
Foster