[types-2.0] d3-geo upgrade to version 1.4

[tomwanzek]

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This PR fixes #12752

• [Feature]: Add reflectX(...) and reflectY(...) to identity transform created with geoIdentity(). Tests included.

Note, that the other change referred to in the release note for d3-geo 1.4 is already conformed to.

[dt-bot]

d3-geo/index.d.ts

to authors (@Ledragon @tomwanzek @gustavderdrache @borisyankov). Could you review this PR?
👍 or 👎?

Checklist

• pass the Travis CI test?

[tomwanzek]

@andy-ms Wow, what a change in Travis testing! 🎆 !

[gustavderdrache]

👍