Eventsim

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* Fixed tkinter issue between python 2 and 3 (importing tk not needed when using the import all syntax on eventsim.simevent)
* improvements and removed unnecessary codes.

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* Made improvements to trimlist to accept, display and trim more than one argument

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* Made improvements to trimlist

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* fixed double outcome list generation in the randgen module
* fixed errors shown when "r" or "s" is the only argument given
* Changed trimlist in the discrete module to approximate to 4 decimal places. (`Formerly 3 decimal places`)

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* Fixed some bugs, optimised program
* Renamed models to discrete
* Now all classes begin with an uppercase
* discrete(formerly models) now has its own class for easy manipulation
* Two more methods added to discrete (trimval and trimlist) to display number output in a clean way and approximate to 4d.p)

.. note::
please if you had a previous version of eventsim, it is advisable to uninstall it first in case of errors. Use:

.. code::

pip uninstall eventsim