*   `make_template()` takes an optional `custom_getter_ param`.
*   Added comment about how existing directories are handled by
    `recursive_create_dir`.
*   Added an op for QR factorizations.
*   Divides and mods in Python API now use flooring (Python) semantics.
*   Android: pre-built libs are now built nightly.
*   Android: cmake/gradle build for TensorFlow Inference library under
    `contrib/android/cmake`