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# Release 2.21.0

## TensorFlow

### Breaking Changes

* Support for Python 3.9 has been removed starting with TF 2.21.
* The TensorBoard (TB) dependency has been removed starting with TF 2.21.

### Major Features and Improvements

* `tf.lite`
    * Adds int8 and int16x8 support for SQRT operator.

provide full-strength generic security: 32 bytes // for SHAKE128 and 64 bytes for SHAKE256. It does not change the underlying // state. It panics if any output has already been read. func (s *SHAKE) Sum(in []byte) []byte { return s.d.Sum(in) } // Write absorbs more data into the hash's state. // It panics if any output has already been read. func (s *SHAKE) Write(p []byte) (n int, err error) { return s.d.Write(p) } func (s *SHAKE) Read(out []byte) (n int, err error) { fips140.RecordApproved() // Note...