Add exp10 for consistence (#94)

Author: johnnychen94

src/ColorVectorSpace.jl

@@ -25,7 +25,7 @@ import Base:      conj, sin, cos, tan, sinh, cosh, tanh,
                   sind, tand, acosd, acotd, acscd, asecd,
                   asind, atand, rad2deg, deg2rad,
                   log, log2, log10, log1p, exponent, exp,
-                  exp2, expm1, cbrt, sqrt,
+                  exp2, exp10, expm1, cbrt, sqrt,
                   significand,
                   frexp, modf,
                   float
@@ -197,7 +197,7 @@ const unaryOps = (:~, :conj, :abs,
                   :sind, :tand, :acosd, :acotd, :acscd, :asecd,
                   :asind, :atand, :rad2deg, :deg2rad,
                   :log, :log2, :log10, :log1p, :exponent, :exp,
-                  :exp2, :expm1, :cbrt, :sqrt,
+                  :exp2, :exp10, :expm1, :cbrt, :sqrt,
                   :significand, :lgamma,
                   :gamma, :lfact, :frexp, :modf,
                   :(SpecialFunctions.erf), :(SpecialFunctions.erfc),