Release 20.02

Deprecated features:

New Features:

Other Changes:

• Fixed issue where certain exceptions were left uncaught leading to driver crash.

Known Issues:

• The CTS test "TestRandomGraph/RandomGraphTest#LargeGraph_TENSOR_FLOAT16_Rank3/41" is currently failing on CpuRef.
  The failure is being caused by an unfortunate combination of a LogSoftmax layer followed by a Floor layer blowing up the slight difference between fp16 to fp32.
  Google have been informed about this and in the meantime our in house version of CTS will ignore this test.