v1.5.0

• REFACTOR: OpacityEffect now uses opacity instead of alpha internally (#2064). (b3b67301)
• REFACTOR: Game render box cleanup (#1691). (60a5830d)
• FIX: Event mixins missing @mustCallSuper (#2036). (c26d5da3)
• FIX: SpeedController advance() should execute after its effect's onStart() (#2173). (7a1e2e8b)
• FIX: Refresh vertices on size change of RectangleComponent (#2167). (4020d68b)
• FIX: Fix coordinate system calculation in FixedAspectRationViewport (#2175). (c9c9881c)
• FIX: SpriteButtonComponent missing @mustCallSuper added (#2001). (45a9d79b)
• FIX: Focus handling with a scope on the GameWidget (#1725). (d1cd8517)
• FIX: RemoveEffect should work within SequenceEffect (#2110). (03e1f33d)
• FIX: #1966 unit test for Particles (#2097). (59bd7ebb)
• FIX: OpacityEffect custom paint override (#2056). (fe9d4d9b)
• FIX: #1998 (#2013). (f63711dc)
• FIX: solid circles and polygons intersection (#2067). (62c5c2e1)
• FIX: #2017 (#2039). (7f546b0f)
• FIX: Exception when having multiple calls to dispose() function of a Svg instance (#2085). (a287904e)
• FIX: Add missing hitbox parameters (#2070). (8aacb555)
• FIX: Change Vector2.zero() to Vector2(0, -1) in Vector2Extensions.fromRadians() (#2016). (801c683c)
• FEAT: Add children to World constructor (#2093). (3af416dc)
• FEAT: Add paint layers to HasPaint and associated component renders (#2073). (9e6bf4fb)
• FEAT: Add SizeProvider to clip_component and custom_paint_component. (#2100). (bb710646)
• FEAT: Added HasGameReference mixin (#1828). (12ce270b)
• FEAT: Added toString method to all the drags events message handlers (#2014). (a34f1df7)
• FEAT: Add maintainState property to Route (#2161). (576ceaac)
• FEAT: add onCancelled to ButtonComponent and HudButtonComponent (#2193). (e7f08906)
• FEAT: onComponentTypeCheck support for ShapeHitbox (#1981). (f840210b)
• FEAT: Added glow effect using maskFilter (#2129). (bcecd3c1)
• FEAT: Add support for styles propagating through the text node tree (#1915). (b5780d42)
• FEAT: Added SpriteFont class (#1992). (a0d7eada)
• FEAT: Added CameraComponent.withFixedResolution() constructor (#2176). (e289f118)
• FEAT: Add optional maxDistance to raycast (#2012). (6b78b10f)
• FEAT: clampLength for Vector2 extension (#2190). (51a896b2)
• FEAT: Adding onChildrenChanged (#1976). (3d043b86)
• FEAT: Adding ComponentNotifier API (#1889). (bd7f51f5)
• FEAT: removed future + isRemoved field for Component (#2080). (9f322785)
• BREAKING FIX: Correct coordinate system for a circular viewport (#2174). (93dc4325)
• BREAKING FIX: PolygonComponent no longer modifies _vertices (#2061). (8cd4793a)
• BREAKING FEAT: Add OpacityProvider (#2062). (0255cc32)