v1.4.0-rc1

# What's new?

• (Experimental) Quantum-Inspired Metaheuristic Neural Network (QIMHNN) at Gradien.Experimental.Models.

• (Experimental) Metaheuristic Optimizer for QIMHNN at Gradien.Experimental.Optim.

• (Experimental) SwarmPSO Optimizer for QIMHNN at Gradien.Experimental.Optim.

• (Added) Adafactor Optimizer at Gradien.Optim.

• (Added) Accumulated Optimizer (Gradient Accumulation) wrapper at Gradien.Optim.

---

# What's changed?

• (Changes) Small fixes

  • several small fixes. (forgot what is it)

• (Changes) Several small improvements

  • removed most metatables.
  • slightly performance bumps (only micro-optimizations).