Compass-interface

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Merged with ``compass-interface-core``.

Restructured project to per-subpackage folders.

Updated infrastructure to cope with this.

Added retrospective changelog.

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Drastically improved dockerfile (made it much smaller too).

Centralised API error codes for consistency.

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Removed redis support.

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Updated pin on ``compass-interface-core`` to ``0.20.0`` (fix missed files).

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Removed ``compass.util.cache``.

Updated pin on ``compass-interface-core`` to ``0.20.0``.

Updated JS sources to Compass version 4.07.

Added script to automatically update Compass JS sources.

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Fixed packaging to include JSON resources.