Avoid zooming in when zooming out over certain areas of chart (#574)
Avoid zooming in when zooming out over certain areas of chart (#574)

* Avoid zooming in when zooming out over certain areas of chart

Zooming out when hovering over y-axis labels or legend would cause `minPercent` to be negative or past 100%, causing the chart to zoom in instead.

* Update src/scale.types.js

Co-authored-by: Jukka Kurkela <d9daa89e8f2d44f5a7150603c781256d9a28ed9c@gmail.com>
chartjs/Chart.Zoom.js