Log Message:
Update to 0.1.62

Changelog:
2019-02-01 babl-0.1.62
Continuous integration with gitlab.
Initial CMYK spaces with lcms2 based ICC support, much room for optimization.
Improved custom space support for palette formats.
scRGB space, works like sRGB but always with linear TRCs.
Model introspection API permitting low overhead checks whether a format/model
is RGB, CMYK type of alpha and similar.