heatmap.js in highstock-rails-5.0.11

- old
+ new
@@ -1,23 +1,25 @@
 /*
- Highcharts JS v4.1.10 (2015-12-07)
+ Highcharts JS v5.0.11 (2017-05-04)
 
- (c) 2011-2014 Torstein Honsi
+ (c) 2009-2017 Torstein Honsi
 
  License: www.highcharts.com/license
 */
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