Breaks when browserslist includes unreleased Safari versions #38
Description
On a browserslist that includes unreleased Safari versions, the library seems to break when accessed with any Safari version (not just Safari TP), presumably because it's being compared against the browserslist versions.
TypeError: Invalid Version: TP.0.0
at new SemVer (/devpath/wp-calypso/node_modules/semver/semver.js:312:11)
at compare (/devpath/wp-calypso/node_modules/semver/semver.js:585:39)
at Function.gte (/devpath/wp-calypso/node_modules/semver/semver.js:634:10)
at compareBrowserSemvers (/devpath/wp-calypso/node_modules/browserslist-useragent/lib/index.js:182:19)
at /devpath/wp-calypso/node_modules/browserslist-useragent/lib/index.js:208:93
at Array.some (<anonymous>)
at matchesUA (/devpath/wp-calypso/node_modules/browserslist-useragent/lib/index.js:207:25)
The issue appears to be the non-numeric nature of Safari TP's version "numbering", possibly when combined with the following browserslist-useragent flags: ignorePatch: true, ignoreMinor: true, allowHigherVersions: true.