Basic build out for enabling chart hover state.
Adding hover state to chart lines.
Fixing experiment alternative highlighting.
Adding some helpful comments
Enabling chart hover states based on table interaction.
Adjusting table-line highlighting behavior.
Adding support for chart/circle highlighting
Removing chart tooltip
Sort chart lines so the active line is "above" the non-hovered lines
Merge pull request #50 from seatgeek/issue-43

Graph hover states. Closes #43