Backend.ai-integration-jupyter

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- Add support for Python 3.5 as well.

- Adapt to the latest API with explicit modes in the execution loop.

- Upgrade the client library to v1.1.5 release.

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- Adapt to the latest API with explicit run IDs per execution.

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- Change the project name to "Backend.AI Jupyter Integration"
and the import path to "ai.backend.integration".

- This version is now paired with the Backend.AI Client for Python v1.0.0
release.

- Add support for Python 3.5 (along with the new Backend.AI client library).

- README is provided in ReST to remove dev-dependency to pypandoc.

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- This is a transitional release to make notice of package renaming on PyPI.

- Add C/C++/Java kernels.

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- Add PyTorch kernels.

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- Add syntax highlighting support.