Noop summary ops and support for react native

• Adds some ops for canned TF 2 Estimators
• Noops summary kernels so that the summary ops can be included in the graph but have no implementation on device
• Uses a custom namespace for double_convert to avoid conflicts with double_convert dependency in React Native

Custom namespacing the double_convert dependency isn't efficient but I couldn't work around dependency and I believe versioning issues with React Native and this was the simplest solution for a small amount of code.

Support for boosted tree inference

Whitelisted ops needed for inference with boosted trees

Merge upstream 2.0.3 changes

Merge pull request #24 from doc-ai/r2.0-2.0.3-upstream

merge upstream 2.0.3 changes, build, test, bump version

Vend x86_64 and arm64 builds only

Drops support for armv7 and armv7s architectures from tensorflow build. See README Installation for additional changes you may need to make to your project settings.

If you require armv7 or armv7s support use the 1.15 release line of this pod.

Lib storage reorg and Xcode 12.2 build fix

No changes to build but moved some files around and so need to tag an update to reflect the new source location. Fixed a build issue with Xcode 12.2. Produces a slightly larger version of the build with latest version of Xcode build tools.

Lib storage reorg and Xcode 12.2 build fix

No changes to build but moved some files around and so need to tag an update to reflect the new source location and fixed a build issue with Xcode 12.2

Lib storage reorg and Xcode 12.2 build fix

No changes to build but moved some files around and so need to tag an update to reflect the new source location and fixed build issue with Xcode 12.2

Fix critical on-device crash

Fix an on-device crash related to a cpu timer utility. This is a critical crash that could prevent any model from being loaded on device.

Fix critical on-device crash

Fix an on-device crash related to a cpu timer utility. This is a critical crash that could prevent any model from being loaded on device.

Remove xcconfig options

Remove xcconfig options from podspec but no changes to underlying build.

The options effectively do nothing and must be the responsibility of the consumer. Readme includes instructions for adding them but they are also included automatically as part of Tensor/IO, which is the only active interface to this dependency right now.