4.1.0
Added gradient() method for generating color scales (#51, #50)
- Supports two-color gradients: $colorA->gradient($colorB, $steps)
- Supports multi-color gradients with pivots: $colorA->gradient([$colorB, $colorC], $steps)
- Works with all color types (Hex, RGB, HSL, HSV, CMYK, OKLCH, RGBA, HSLA)
- Returns array of colors matching the starting color type
- Added comprehensive tests for all color types and edge cases