More comprehensive Atari data

[void-elf]

We have quite a bit of Atari data, but for many of the games we only have 1-3 data points, all from one paper.

There is a lot to be added from the papers listed in https://github.com/AI-metrics/master_text/blob/master/AI-metrics-data.txt and by looking for more recent results (especially for Montezuma's Revenge)

This would be a great task for a volunteer just getting started with this project.

[pde]

This looks almost done! The only additional thing I know we should do is make sure we've included all of these papers and then we can mark this as done.

[pde]

The OpenAI Evolutionary Strategies paper has results on lots of Atari games, and got the state of the art on quite a few of them. So we should figure out how to transfer thei entire results table.

[pde]

(Also that paper is interesting since it retrains A3C; we should use algorithm_src="https://arxiv.org/abs/1602.01783" if we add those results)

[pde]

The Evolutionary Strategies data seemed best handled with a simple scraper, so I wrote one