moved dsga::invoke() into its own example file ,,, made all lambda ca…

…ptures specific

v2.0.0 - see changelog for info -- breaking change with how we evalua…

…te operations/functions of length 1 vectors

v1.5.0 - added initializer list constructors for basic_vector and bas…

…ic_matrix

v1.4.0 - copyright updates and minor refactoring

v1.3.0 -- major underlying machinery refactoring

moved operator <=> and support functions out of dsga.hxx and into an …

…example file

v1.0.0 released

release of v0.11.0

v0.10.0 - conversion tests/example with std::valarray

v0.9.0 - added access to iterators for vector_base -- name refactored…

… the duck type interface for the vectors -- added a few iterator tests