ref(vector): value-ize Vector2
ref(vector): value-ize Vector2

a quick test with existing code showed that the API was confusing and cumbersome and no improvement over the glmatrix version.

stardazed/stardazed,zenmumbler/libzm,stardazed/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/libzm,stardazed/stardazed,zenmumbler/stardazed-tx,stardazed/stardazed-tx,stardazed/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/libzm,zenmumbler/libzm