updated changelog to include new 3d operations

Author: John Welsh

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## [Master]
 
+- Added converter for ``torch.nn.functional.adaptive_avg_pool3d``
+- Added converter for ``torch.nn.functional.adaptive_max_pool3d``
+- Added converter for ``torch.maxpool3d`` and ``torch.nn.functional.max_pool3d``
 - Added Quantization Aware Training (QAT) workflow to contrib
 - Added converter for ``torch.roll``
 - Added converter for ``torch.nn.functional.layer_norm``