history: Update PathUtils for 4.6.2

[Jessidhia]

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Yeah, it is a breaking change for people that were using PathUtils directly. I believe it is not supposed to be public API, though.

[dt-bot]

types/history/PathUtils.d.ts

can't parse definition header...

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types/history/index.d.ts

to authors (@sergey-buturlakin @ngbrown @rokoroku). Could you review this PR?
👍 or 👎?

Checklist

• pass the Travis CI test?