Eventio

Include the converted cython extension c-files to make it installable without cython

Fix a performance regression

Parsing MCEvent was much slower due to the use of `recarray.append_field`, fixed now.

SimTelFile

We now provide a higher level abstractions over SimTelArray Outputfiles called `SimTelFile` hat iterates over array events.

Add command line tools

We now provide three command line tools, to look into `eventio` files.

* `eventio_print_object_information` prints a table of container types, versions and counts.
* `eventio_print_structure` prints all containers and subcontainer decriptions in a file
* `eventio_plot_histograms` uses matlplotlib to plot the histograms stored in an eventio file

Add Histogram support

To see all histograms in a file, run


$ python examples/plot_hists.py /path/to/simtel/file

SimTel support

* Most simtel types got implemented
* Should be able to read CTA prod2, prod3b and prod4 simulations, both simtel and corsika