upgraded highcharts dependency to 8.0

CHANGELOG.md

@@ -1,8 +1,12 @@
 Yii2 Highcharts Changelog
 =========================
 
+### [v8.0](https://github.com/miloschuman/yii2-highcharts/releases/tag/v7.1.2) (2020-04-21) ###
+* Upgraded Highcharts JS library to the latest release (8.0). See the Highcharts [changelog](https://www.highcharts.com/blog/changelog/) for more information about what's new in this version.
+* Updated docs for #77 HighchartsAsset::register($this)->withScripts(['highstock']); results with error 16
+
 ### [v7.1.2](https://github.com/miloschuman/yii2-highcharts/releases/tag/v7.1.2) (2019-08-07) ###
-* Upgraded Highcharts JS library to the latest release (7.1.2). See the Highcharts [changelog](https://www.highcharts.com/blog/changelog/) for more information about what's new in this version.
+* Upgraded Highcharts JS library to the latest release (7.1.2).
 * Added support for Gantt chart type (issue #74). See included [Gantt Chart Example](https://github.com/miloschuman/yii2-highcharts/tree/master/doc/examples/highcharts.md#gantt-chart) for usage.
 
 ### [v7.0](https://github.com/miloschuman/yii2-highcharts/releases/tag/v7.0) (2019-01-21) ###

README.md

@@ -37,7 +37,7 @@ php composer.phar require miloschuman/yii2-highcharts-widget
 or add
 
 ```sh
-"miloschuman/yii2-highcharts-widget": "^7.0"
+"miloschuman/yii2-highcharts-widget": "^8.0"
 ```
 
 to the require section of your `composer.json` file.
@@ -105,7 +105,7 @@ If you merely want to include the Highcharts/Highstock/Highmaps javascript libra
 ```php
 use miloschuman\highcharts\HighchartsAsset;
 
-HighchartsAsset::register($this)->withScripts(['highstock', 'modules/exporting', 'modules/drilldown']);
+HighchartsAsset::register($this)->withScripts(['modules/stock', 'modules/exporting', 'modules/drilldown']);
 ```
 
 In this scenario, you would need to write and include your own JavaScript to display the charts, just as illustrated in the [Highcharts Demo](https://www.highcharts.com/demo), [Highstock Demo](https://www.highcharts.com/stock/demo) and [Highmaps Demo](https://www.highcharts.com/maps/demo) pages.