Update TypeScript version to 3.2.4#1

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DavidANeil wants to merge 2 commits intostringham:masterfrom

DavidANeil:patch-1

Commits on Jan 18, 2019

Update TypeScript version to 3.1.1
DavidANeil
authored

Commits on Jan 19, 2019

Upgrade TypeScript to 3.2.4
DavidANeil
authored