* Allow adding a label for each specific point in a chart
* Update test fixtures
* Update README with new data format
* Simplify getPreviousDate function code
* Update tooltip dates format
* Add new prop to charts 'tooltipTitle' to override the date tooltip title
* Fix totals not being calculated in charts legend
* Fix JS error when hiding lines in chart
* Fix a couple of issues with chart README
* Add quotes around prop names
* Remove unused variable
* Remove colon after tooltip label