changes from 1.2 to 1.3
-----------------------

* Fix date range picker to keep predefined date ranges current
* Support graphs with color references
* Fix part of legend being hidden
* Various NPM package updates


changes from 1.1 to 1.2
-----------------------

* Improve the way data is fetched from the RRD files (use rrdtool xport)
* Simplify data handling before being plotted
* Improve handling gaps in graphs
* Upgrade to Bootstrap 5
* Various NPM package updates


changes from 1.0 to 1.1
-----------------------

* Simplify time range selection
* Allow exporting and importing dashboards
* Various NPM package updates
* Show data in a single resolution (points/time) across the displayed range
* Only keep data for displayed range to make improve vertical scaling