Features:
- a configuration option for the maximum number of pixels in an image as a prevention of PNG decompression bombs
Bug fixes:
- nicer error message when connecting to redis fails
Features:
- uploads need to be signed using a secret key (when authentication is configured to be required for uploads)
Features:
- text overlays
- watermarks and text overlays positioning using gravity
- Google Cloud Storage support (by @hjr265)
Bug fixes:
- generated file name clash when transformation parameters other than watermark and text overlays are the same