v0.1.19

What's Changed

• Add comprehensive tests (>80) both quantitative and qualitative to ensure the physics engine is precisely correct by @QuentinWach in #49
• Replace the Numpy-backend with Jax and make the sources differentiable as well. Also fixed video export for 3D sims by @QuentinWach in #50
• Add Claude Code GitHub Workflow by @QuentinWach in #51
• Update project structure and documentation by @QuentinWach in #55

Full Changelog: v0.1.18...v0.1.19