Chart-1.8: dependencies

Dependencies for Chart-1.8

library	array base (>=3 && <5) colour (>=2.2.1 && <2.4) data-default-class (<0.2) lens (>=3.9 && <4.15) mtl (>=2.0 && <2.3) old-locale operational (>=0.2.2 && <0.3) time vector (>=0.9 && <0.12)