Docker-map

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* Many more Python 3 fixes (`PR 10 <https://github.com/merll/docker-map/pull/10>`_).
* Cleaned up logging; only using default levels.
* Port bindings are passed as lists to the API, allowing container ports to be published to multiple host
ports and interfaces.

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* Added ``exec_commands`` to start additional commands (e.g. scripts) along with the container.
* Container links are now passed as lists to the API, so that the same container can be linked with multiple
aliases.
* Various compatibility fixes with Python 3 (`PR 9 <https://github.com/merll/docker-map/pull/9>`_).
* Bugfixes on container restart and configuration merge.

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* Bugfixes for network mode and volume check of inherited configurations.
* Fixed deprecation warnings from ``docker-py``.
* Added option to prepare attached volumes with local commands instead of temporary containers, for clients that
support it.

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* Added network modes and their dependencies. Attached volumes are no longer enabled for networking.
* Added per-container stop timeout. Also applies to restart.

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* Adjusted volume path inspection to use ``Mounts`` on newer Docker API versions. Fixes issues with the update policy.

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* Implemented HostConfig during container creation, which is preferred over passing arguments during start since API
v1.15. For older API versions, start keyword arguments will be used.
* Added configuration inheritance and abstract configurations.
* Changed log functions to better fit Python logging.
* Minor fixes in merge functions.
* Bug fix in tag / repository partitioning (`PR 7 <https://github.com/merll/docker-map/pull/7>`_).