Merge pull request #15 from exZ/patch-1

Update package.json

Merge pull request #14 from jmorrell/heroku-postbuild

Merge pull request #13 from jmorrell/master

Add heroku-postbuild script hook

Bind to PORT env variable if present

deploy https://preact-pwa-yfxiijbzit.now.sh/

fix lighthouse warns

fix manifest

move to zeit

update styles

actions

update deps

update example

dockerize