GitLab

* Merged commit includes the following changes:
275131829  by Sergio Guadarrama:

    updates mobilenet/README.md to be github compatible adds V2+ reference to mobilenet_v1.md file and fixes invalid markdown

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274908068  by Sergio Guadarrama:

    Opensource MobilenetV3 detection models.

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274697808  by Sergio Guadarrama:

    Fixed cases where tf.TensorShape was constructed with float dimensions

    This is a prerequisite for making TensorShape and Dimension more strict
    about the types of their arguments.

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273577462  by Sergio Guadarrama:

    Fixing `conv_defs['defaults']` override issue.

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272801298  by Sergio Guadarrama:

    Adds links to trained models for Moblienet V3, adds a version of minimalistic mobilenet-v3 to the definitions.

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268928503  by Sergio Guadarrama:

    Mobilenet v2 with group normalization.

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263492735  by Sergio Guadarrama:

    Internal change...