v2.0.1 - Bug fix release

What Changed

Bug Fixes

• KernelSHAP / LIME: Fixed all-zero attributions on low-complexity images. Grid fallback when SLIC under-segments; Ridge labels scaled to [0,1].
• GuidedBackprop: Input tensor cloned before requires_grad to avoid mutating caller tensor.
• MeaningfulPerturbation: Validated input detached before optimisation loop.
• Metrics: aopc_score returns writeable array; max_sensitivity returns Python float.

Dependencies

• torchvision promoted to core dependency (was under [full] extras).
• requirements.txt now populated.

Tests

• New test/test_everything.py: 65 end-to-end test cases with correctness assertions.