0.19 Update

[tbash]

• [x] run elm-upgrade
• [x] rm infix operators (deprecated in 0.19)
• [x] update tests
• [x] bump version number
• [x] update travis

[krisajenkins]

Thanks for this!

I've just published it as it. Hopefully we can get the tests working again before the official release. :-)

[tbash]

Awesome! Yeah, hopefully. I'll try to stay on top of it.