Better UI for selecting the active size range #4
Description
There should be a more intuitive way to select the size range on which benchmarks are run.
The chart has an option to highlight the active range. We could make that highlight interactive, for example: let me drag the endpoints of the highlighted range to change it.
We should still display the exact numerical value of the current size range somewhere on the toolbar, but the current popup buttons could (and probably should) be replaced by something else.