v1.6.0

• All Component have an origin option, it allow to move the rendering position without changing the position itself (useful to center Rectangle on center point instead of top-left)
• Add LinearGradient and RadialGradient class compatible with all fill and stroke options
• Math has a new map function returning the value from one scale to another
• Fix mouse hovering detection on rotated component
• Fix inconsistent behavior with negative stroke
• Fix Text underscore option not working with alignement