MOABB version 0.2.0

Updated code after adding P300, SSVEP, and various fixes and improvements. There are likely to be necessary hotfixes but since the userbase is rather small I'm releasing anyway

Code for arXiv preprint

This describes the state of the code for the arXiv preprint at https://arxiv.org/abs/1805.06427, including the implemented TRCSP within moabb.pipelines.csp