Vector.h improvement#96

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simichi wants to merge 2 commits intoVMML:masterfrom

simichi:vector.h_improvement

Commits on Dec 1, 2015

- added static_cast<T> to normalize to remove conversion warning. -added default size = 3 to free function cross, such that vmml::cross(a, b) is possible instead of vmml::cross<3>(a, b).
simichi
committed
-default template argument instead of new function
simichi
committed