Soopervisor

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* Fixes an error that caused ``soopervisor export`` to fail due to non-serializable object

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**Important:** We detected a problem with this release when running ``soopervisor export``. Please use ``0.7.2``

* Fixes error that caused docker image building to fail if the repository didn't have a version

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**Important:** We detected a problem with this release when running ``soopervisor export``. Please use ``0.7.2``

* Improves CLI documentation
* Adds ``--git-ignore`` to documentation
* Various documentation improvements
* Changes short version of ``--until-build`` to ``-u``
* Adds "Task Communication" user guide
* Display warnings if passing CLI options that do not apply to SLURM
* SLURM exporter raises error if ``sbatch`` isn't installed
* Showing a warning if source dist is >5MB (53)
* ``soopervisor add`` adds a default ``exclude`` value by extracting product paths from ``pipeline.yaml``
* Copying user settings when generating the Docker image
* Experimental Kubeflow integration
* Airflow integration allows to choose between ``BashOperator``, ``KubernetesPodOperator``, and ``DockerOperator`` using ``--preset``
* Many modules and test cases re-written for better code quality and maintainability

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* Fixes output message after exporting to Argo
* Adds flag to ``source.copy`` to ignore git
* ``soopervisor export`` raises and error if ``git`` isn't tracking any files
* Adds ``--git-ignore`` to ``soopervisor export``

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* Adds support for SLURM
* ``AirflowExporter`` uses ``KubernetesPodOperator`` by default (33)
* Simplified Airflow and Argo/k8s tutorials

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* Clearer error message when pending ``git commit``
* Clearer error message when the user does not change docker repository default value (29)
* Argo spec sets ``imagePullPolicy`` to ``Never`` if repository is ``null``
* Documents Kubernetes/Argo configuration schema
* General documentation improvements