Updating code for Elm 0.19

This site contains a couple of examples in the Elm language. Recently, the version Elm 0.19 was released which introduced quite a few breaking changes.
But fortunately upgrading was made easy thanks to the official upgrade docs and the tool elm-upgrade.

I updated the following posts for Elm 0.19:

• Elm Oauth integration (GitHub and Google)
• Scroll events in Elm
• Elm Filedrop example
• Focusing elements in Elm
• Decoding models from a JSON formatted string
• Mini game 1 + 2 = 3
• [CSS styles in elm-reactor and pretty check boxes ](/posts/2017-08-16_elm-reactor-style)

Note: Upgrading each post took between 15 and 90 minutes.