Added
* Experimental support for *importing* VEDA data files (no export support yet).
* Experimental support for *importing* GDX data files (no export support yet).
* Anaconda environment file to simplify install process.
* `-v`/`--version` option for printing program version.
* Date and time is now printed at completion of model execution.
* Tests of ``__main__``.
* Added tests and documentation of `init`, `init_cols`, `init_icols`, `auto_init` and corresponding post keyword arguments of wrapper functions.
Changed
* Minimum python requirement increased to `3.5`.
* Minimum pandas requirement increased to `0.23`.