only updateLegend when we actually want to show the legend for the first time
adding a test to make sure the new updateLegend behaviour works
Fix tooltip when multiple xs on multiple charts - #758
Use c3-legend-item-hidden to set opacity of hidden legend item - #128
Remove useless variable
Fix category axis tick when load API called - #756
Fix tick text when flow API called - #772
Fix legend item width when data.names called - #775
Fix interface of toggle API - #776
Fix conflict
Merge branch 'bobbyrenwick-master'
Release v0.4.5
Adding a note re: issue queue to readme.
Fix legend state when revert called - #782
Merge pull request #785 from aendrew/adding_note_to_readme

Adding a note re: issue queue to readme.
Fix event rect when moving zoom extent - #786
Release v0.4.6