Rename light/dark functions as they return boolean value

[felixsanz]

This functions:

color.light();  // true
color.dark();   // false

They return a boolean, so the API should be color.isLight() and color.isDark(). :(

Being just light() it seems like it returns a light version of the color, or something like that.

It is too late to push it into 1.x? Maybe add this methods and move light() and dark() as an alias?

[felixsanz]

I've created PR #102

[Qix-]

So I agree with the spirit of these comments, though your solution I feel is just another bandaid patch (especially the PR).

There's this creeping problem of the library outgrowing its flat API style now that many different color models are included.

There needs to be some more thought put into the overall API and how we can silo things out a bit more to include the vast amounts of color operations that can occur between all of the different color models. This also includes the fact I want to support color space manipulation in the future, as well as support color schemes (e.g. specify multiple colors and perform batch operations on them).

The API is quickly growing a bit out of control, so the light/dark descriptiveness problems will be resolved when the solution to the above mentioned problem is found.