De-recurcify lib
Added Canon 7DMkII and G7X
Added Canon G1X Mark II
Added Sony RX-100-MK3 and A-6000.

Added A-6000 coeffs
Added Nikon D4S. With coeff
Added Olympus E-PL6 and E-PL7.
Added coeff for E-PL6.
(no sample for E-PL6 ; extrapolated)
Added Nikon D610 with coeff