Bump NPM version to 0.6.6 in preparation for publishing.
Bump NPM version to 0.6.6 in preparation for publishing.

kassens/recast,ersengultepe/recast,marcioj/recast,shumov/recast,ipeychev/recast,stefanpenner/recast,benjamn/recast,kyldvs/recast,cpojer/recast,benjamn/recast,benjamn/recast,fkling/recast,rwaldron/recast