v0.1.4 of chromatic

Color science for Dart: conversions between sRGB, Lab, XYZ, LCH, HSL and more. Delta E, chromatic adaptation, proper sRGB EOTF. Changelog excerpt: - Fix: 0.1.3 was published with a CHANGELOG that did not include its own version entry (pana flagged it as invalid). This release has a correct CHANGELOG. No other changes.