Add a starter app.json for simple Heroku deployment
Add a Heroku button to the readme
Make postdeploy script executable
Set the celery broker URL if none is set
Run migrations as part of postdeploy
Use the multi buildpack
Update buildpacks
Require Pillow for image processing
Add more variables to the app config
Commit POSTGIS extension in postdeploy script
Add required false to the SHAREABOUTS environment variables
Disconnect postdeploy script from database after PostGIS setup
Use the commit hash instead of release number for geo buildpack
Add a command to create a default superuser account for one-click setup
Create a default superuser account on postdeploy
Merge branch 'master' into heroku-deploy
Detect whether the postgis extension has already been created during postdeploy