Update TypeScript template to TS 3.1

Polymer / pwa-starter-kit

Starter templates for building full-featured Progressive Web Apps from web components.

https://pwa-starter-kit.polymer-project.org

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Closed keanulee closed 5 years ago

keanulee commented 5 years ago

Blocked on either:

Conflicting toggleAttribute() definition (https://github.com/Polymer/polymer/pull/5371)
Replace app-layout elements (#220)

keanulee commented 5 years ago