Merge branch '5.0.x' into '3391197-enable-support-for'

charts.api.php

charts.post_update.php

config/schema/charts.data_types.schema.yml

modules/charts_billboard/README.md

modules/charts_billboard/charts_billboard.libraries.yml

modules/charts_billboard/composer.json

...s/charts_billboard/src/Plugin/chart/Library/Billboard.php

modules/charts_c3/src/Plugin/chart/Library/C3.php

modules/charts_chartjs/README.md

modules/charts_chartjs/charts_chartjs.install

modules/charts_chartjs/charts_chartjs.libraries.yml

modules/charts_chartjs/composer.json

modules/charts_chartjs/js/charts_chartjs.js

modules/charts_chartjs/src/Plugin/chart/Library/Chartjs.php

modules/charts_google/charts_google.libraries.yml

modules/charts_google/js/charts_google.js

modules/charts_google/src/Plugin/chart/Library/Google.php

modules/charts_highcharts/charts_highcharts.libraries.yml

...charts_highcharts/src/Plugin/chart/Library/Highcharts.php

src/ConfigUpdater.php