Bump version to 0.9.0rc0

Branch 124012080

* Added Raspberry Pi cross-compilation support to makefile

* Fixed makefile linking problem with Pi

* Added documentation for Pi compilation

* Added live camera iOS example

* Updated Eigen version in makefile, and added more iOS compile flags

* Added licenses to makefile sh scripts, fixed simple iOS example setting

Change: 124012080

- Add a ReadUpTo method to ReaderInterface
- Add ReadUpToLocked to ReaderBase w/ default implementation.
  Readers may override this method to achieve better batched
  I/O performance.
Change: 124012016

Change: 124007278

This takes previously generated code, and includes it in the
repository. The main advantage of doing this is that we can specialize
the deserialization routines for various protobuf types that tend to
be large, and thereby avoid the problem where we brush up against the
default protobuf limits.

Fixes #2233.
Change: 124007049

Cleanup: Get rid of unused copy of simple threadpool implementation. The implementation is identical to the simple threadpool in Eigen (can be selected by not defining EIGEN_USE_NONBLOCKING_THREAD_POOL), which also has had all the same tracing calls added via the hooks in EigenEnvironment.
Change: 124006070

Change: 124005557

Change: 124003810

Change: 124003630

* conv_grad_ops.cc
* cwise_op_inverse.cc
* cwise_op_squared_difference.cc
* resize_bilinear_op.cc
Change: 123999923

Add x permission back to test_tutorials.sh

Change: 123998188

* Added Raspberry Pi cross-compilation support to makefile

* Fixed makefile linking problem with Pi

* Added documentation for Pi compilation

* Added live camera iOS example

* Updated Eigen version in makefile, and added more iOS compile flags

Changing API for monitors step_begin to only take step and return list of tensors to run. Support distributed training in EveryN monitor.
Change: 123996408

* Enable GPU for L2Loss float64

* Enable GPU for L2Loss float64

Change: 123989954

Change: 123989187

Make mean a method in distributions.
Add variance/std/mode as method to the base class.
Make existing distributions conformant.
Add log_likelihood to ContinuousDistribution/DiscreteDistribution.
Change: 123988053

Support for passing params into Estimator that will be passed to the function call of model_fn. Note, params are only passed if model_fn takes 4 arguments, otherwise it works the same way.
Change: 123985980

Change: 123984360

Change: 123983886

Change: 123983409

only registering some types on android and ios (instead of __ANDROID__ macro).
Change: 123983258

Adds an ExtractImagePatchesOp that performs im2col. Forward only implementation for now.  Fixes #2605.
Change: 123983077

Fixing bug in propagating normalized y into the input of the next power iteration, improved eigenvalue estimate by making use of the Rayleigh quotient, and normalizing the random input vector.
Change: 123975933

Change: 123975883

Change: 123975418

Fix incorrect typescript type annotation which was caught by the typescript compiler due to newer typings definitions for lodash library.
Change: 123971815

Change: 123971387

Change: 123971216

gradients, some variants etc.).
Change: 123967787

gradients, some variants etc.).
Change: 123967117

Change: 123964973