v1.19.0: Musicgen, MarkupLM ONNX export

Extended ONNX export

Musicgen and MarkupLM models from Transformers can now be exported to ONNX through optimum-cli export onnx. Musicgen ONNX export is used to run the model locally in a browser through transformers.js.

• Musicgen ONNX export (text-conditional only) by @fxmarty in #1779
• Add support for markuplm ONNX export by @pogzyb in #1784

Other changes and bugfixes

• Fix IR version for merged ONNX decoders by @fxmarty in #1780
• Update test model id by @echarlaix in #1785
• Add Nvidia and Neuron to README by @JingyaHuang in #1791
• adds debug options to dump onnx graphs by @prathikr in #1789
• Improve PR template by @fxmarty in #1799
• Add Google TPU to the mix by @mfuntowicz in #1797
• Add redirection for Optimum TPU by @regisss in #1801
• Add Nvidia and Neuron to the installation doc by @JingyaHuang in #1803
• Update installation instructions by @echarlaix in #1806
• Fix offline compatibility by @fxmarty in #1805
• Remove unnecessary constants for > 2GB ONNX models by @fxmarty in #1808
• Add onnx export function for pix2struct model by @naormatania in #1815

New Contributors

• @pogzyb made their first contribution in #1784
• @naormatania made their first contribution in #1815

Full Changelog: v1.18.0...v1.19.0