Provide an option to simplify browser version ranges in formatBrowserName

[edg2s]

Very long strings are difficult to read, and could be represented much more concisely when there is a run of consecutive major versions, e.g.

Unexpected browser feature "flexbox-gap" is not supported by Edge 79,80,81,83, Firefox 49,50,51,52,53,54,55,56,57,58,59,60,61,62, Chrome 49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,83

->

Unexpected browser feature "flexbox-gap" is not supported by Edge 79-81,83, Firefox 49-62, Chrome 49-83

..such as you see on caniuse.com:

When minor versions are reported, such as reported by Safari, it is uncertain if there are intermediate minor releases that have been left out, so they would require comparison with a list of all known minor versions, but just fixing the cases above would be an improvement.

Safari 10,11,12,13,14,10.1,11.1,12.1,13.1, Safari on iOS 10.0-10.2,10.3,11.0-11.2,11.3-11.4,12.0-12.1,12.2-12.5,13.0-13.1,13.2,13.3,13.4-13.7,14.0-14.4