added tests for CIELab
added tests for CIELCh
modified color parser to support non Int8 values
changed creation signature for CMYK
changed creation signature for HSL
changed creation signature for HSLA
changed creation signature for HSV(A)
updated tests
updated creation for CIELab
updated creation for CIELCh and fixed parsing
updated creation for CMY
updated creation for Grey
updated creation for RGB
added CIELab and CIELCh to Color.parse