tf2onnx-1.9.3

Summary

• added support for opset-15
• added support for tf-2.7
• misc fixes

Changes since tf2onnx-1.9.2

• remove 2.6rc0 override by @guschmue in #1683
• Implement GRU rewriter for tf2 by @TomWildenhain-Microsoft in #1688
• Fix bug in reverseV2 for 1D tensors by @TomWildenhain-Microsoft in #1691
• Handle Abs in TransposeOptimizer by @mateusztabaka in #1699
• Fix tf1 loop variable parsing for duplicated Enter nodes by @TomWildenhain-Microsoft in #1697
• Tom/keras gru by @TomWildenhain-Microsoft in #1692
• Implement symmetric padding mode by @TomWildenhain-Microsoft in #1698
• Fix loop optimizer when scan output is also loop-carried-dependent by @TomWildenhain-Microsoft in #1701
• Fix bug in reading hash tables in freeze_session by @TomWildenhain-Microsoft in #1709
• Increase unit test timeout for windows job that often fails by @TomWildenhain-Microsoft in #1711
• Fix RandomUniform/RandomNormal rewriters for non-const inputs by @TomWildenhain-Microsoft in #1710
• Fix usage of custom_ops, custom_op_handlers, and custom_rewriter ags by @TomWildenhain-Microsoft in #1708
• Fix nightly tests by @TomWildenhain-Microsoft in #1712
• Fix nightly (explicit_pads not supported in old tf versions) by @TomWildenhain-Microsoft in #1717
• Tom/tfjs bugfixes by @TomWildenhain-Microsoft in #1723
• Pin onnxruntime-extensions until issue is fixed by @TomWildenhain-Microsoft in #1733
• hardswish support for tflite by @guschmue in #1735
• add opset-15 by @guschmue in #1731
• Optimize einsum when node[1].is_const() by @xadupre in #1739
• replace depreciated docker image by @guschmue in #1750
• Add Keras LSTM support by @q-ycong-p in #1752
• Bug-fix to skip keras LSTM test for TF2.1 by @q-ycong-p in #1754
• tf-2.6.0 -> tf-2.6.1 to avoid build issues by @guschmue in #1759
• Fix the Broken CI by @leimao in #1761
• Fix TF1-Keras Dilated Conv ONNX Exported by @leimao in #1744
• tf-2.7 by @guschmue in #1762
• #1763: fix output shape of flatten rewriter by @guschmue in #1766
• #1749: Fix fused_batch_norm 5d NDHWC input reshape convert by @hwangdeyu in #1769
• [Test ONNX 1.10.2] Verify whether 1.10.2 from TestPyPI solve the crash issue by Shape-15 by @jcwchen in #1753

Full Changelog: v1.9.2...v1.9.3

A huge thank you to our community for this release!

leimao,mateusztabaka,q-ycong-p