Release 2.10.0-rc0

Major Features and Improvements

New ByteSplitter which tokenizes strings into bytes.
New tutorial: Fine tune BERT with Orbit [will be added to tensorflow.org/text soon].
Fixed an issue where dynamic TF Lite tensors were not getting resized correctly.

Fix typo error in subwords_tokenizer guide with text.WordpieceTokenizer
Fixes prepare_tf_dep.sh for OSX.
Add cross-links to tensorflow_models.nlp API reference.
(Generated change) Update tf.Text versions and/or docs.
Update shape inference of kernel template for fast wordpiece and activate the op test.
Update configure.sh for Apple Silicon.
Export Trimmer ABC to be usable as tf_text.Trimmer
Fix TensorFlow checkpoint and trackable imports.
Correct tutorial explanation: meaning of attention weights
Modernize fine_tune_bert.
Lint and update the Fine-tuning a BERT model tutorial
Use pointer for pointer math instead of iterator. Fixes c++17 compilation for regex_split on windows.
Add install_bazel.sh script to make it easy to install the correctly needed version of Bazel. (#946)
Make install_bazel.sh script executable.
Prevent runtime errors from happening due to invalid regular expressions using regex_split & RegexSplitter.
Centralize tensorflow-models docs into a top-level docs/ directory.
Remove link to non-existant section on tf.org.
Move fine_tune_bert guide.
Updated the spelling mistakes in subwords_tokenizer.ipynb
Fixes a bug caused by passing an empty tensor into SentencepieceTokenizer's detokenize method.
Update build for Sentencepiece. Darts was not properly being depended on.
Improve Sentencepiece build by adding missing dependency - str_format.
Fix typos and lint Neural machine translation with attention tutorial
Fix external link formatting, lint NMT with attention tutorial

This release contains contributions from many people at Google, as well as:

gadagashwini, mnahinkhan, Steve R. Sun, synandi