Making sure plot_pca works with and without pipelines
Extracting the version number from setup.py
The version number is now part of the configuration
Test -> PCATest
A prototype of a History class
Refactoring runner.py

It had too many if's, it was getting ugly and it wasn't quite clear
anymore.
coding=utf-8 everywhere
The runner now saves the history.

By now, only the train task is adding data to history.