Toolkit for creating animated GIFs optimized for Slack with validation and animation utilities.

• Provides GIFBuilder for frame assembly, validators to check Slack compliance, and easing functions for smooth motion (bounce, elastic, ease-in-out, etc.)
• Supports emoji GIFs (128x128, under 3 seconds) and message GIFs (480x480) with configurable FPS, color palette, and optimization flags
• Includes animation concepts (shake, pulse, bounce, spin, fade, slide, zoom, particle burst) with code examples and PIL primitives for drawing shapes
• Built on PIL for frame creation and manipulation; handles user-uploaded images as direct content or style reference