added an option to build the library shared
Switched to boost::geometry's polygon; reading of input polygons from WKT files
Removed unused BoundarySegment
updated predicates
Replaced custom Bounding_box with boost geometry's box
Removed Point_2 from the kernel, umeshu now uses non-generically Point2 from Point2.h (which is just a typedef for Eigen::Vector2d)
Reorganized the adaptive predicates a bit
Reformatted Triangulation.h
Adding exceptions to Triangulation; other small changes
default allocator changed to boost::fast_pool_allocator -> slightly better performance