Merge pull request gdg-x#579 from abraham/polymer-3

Upgrade to Polymer 3

Merge pull request gdg-x#711 from cortinico/fix-image-in-blogposts

Fix Image in blogposts to 100% width

2.3.1

2.3.0

Add FID polyfill for Firebase Performance (gdg-x#611)

Add FID polyfill for Firebase Performance

Merge pull request gdg-x#538 from gdg-x/develop

v2.1.0

Replace a preview image

Fixed gdg-x#253 (gdg-x#254)

* Update dependencies

* Update dependencies

* Fix polymer-build

Update travis-ci config

Update My schedule icon on session element after sign out