v0.2.0

🚀 Features

• New CosineLinear Angle Bending Kernel
  • Linear Geometry Support: Implements Eq. 10' from Mayo et al. (1990) — E = K(1 + cosθ) — for atoms with θ₀ = 180° equilibrium.
  • Correct Curvature: Replaces CosineHarmonic at the linear limit where it degenerates into a quartic well (∝ (π−θ)^4), restoring the physically correct quadratic restoring force (∝ (π−θ)^2).
  • Fastest Kernel: Constant derivative (Γ = K) yields ~1.5 Billion ops/sec — single multiply-add for energy, zero arithmetic for force.
  • Verified: Unit + integration tests included (gold-standard values at 0°, 90°, 120°, 180°).

Contributors

• @TKanX Lead Developer

Full Changelog: v0.1.0...v0.2.0