Install `redis` module
Implement `Content` model
Add `Fetcher`
Add `Processor` for creating DZIs
Integrate content model, fetcher & processor
Clean up .gitignore
Provide /content/:id endpoint
Fix whitespace
Ensure ID is numeric
Rename package to `zoomhub`
Make package private
Standardize indentation to two spaces
Document Redis setup in CONTRIBUTING
CamelCase ZoomHub
List Redis as prerequisite
Default tile format to `png` or `jpg`
Add `self` URL to `Content`
Add missing `return`
Redirect to metadata
Pass `content` as view context