Km3pipe

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* minor fixes for i3 files + old aanet
* Add arrival timestamp to controlhost Prefix

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* Introduces ``StreamDS`` in ``km3pipe.db`` which allows easy access to all
streamds tables

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* add ``i3shower2hdf5`` CLI util for converting orcadusj files
* add ``kp.math.space_angle``

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* add ``i3toroot`` and ``i3root2hdf5`` CLI utils for converting I3 files
* drop deprecated ``h5tree``, from ``km3pipe.utils`` (use ``ptdump`` instead)
* drop deprecated ``km3pipe.io.hdf5.H5Mono``
* read aanet ``mc_id = evt.frame_index - 1``

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* drop ``read_hdf5`` and ``GenericPump`` from top level module import
(would make pytables a hard requirement)

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* No more error messages in ``Detector`` or ``Geometry`` (which uses
``Detector``) when reading in corrupt DETX with negative line ids.
* Fixes "TypeError: data type not understood" for Geometry.apply
* Various fixes to support the new HitSeries format (e.g. for RainbowaAlga2)
* New styles
* SciPy histogram showoff by Moritz
* Minor updates in docs
* Skeleton for future project bootstrap