Moved timedelta from get_expiration_time method to expiration_delta property.
Removed example urls/view from app.
Switch to Apache License 2.0.
Added some comments which reference the AWS docs for html form post.
Support for success_action_redirect.
Minor flake8 cleanup.
Don't use 'success_url' for 'success_action_redirect' - this gets confusing when also working with view success_url.
Initial work on upload validation/processing (ValidateS3UploadForm).
Some additional TODO comments.
Better naming for fields on ValidateS3UploadForm.
``upload_to`` is now passed from view to forms, and key prefix is validated in clean_key_name.
Pass content_type_prefix to both forms, and validate in ValidateS3UploadForm.
Only set content type initial data to 'binary/octet-stream' if it hasn't already been set.
Use correct template. Update of form rendering to use <ul>.
Added security warning to README.
Added support for ``success_action_status`` to S3UploadForm.
Only read 1024 bytes when determining mime type on ValidateS3UploadForm.
Initialised sphinx docs.
Initial work on dropzone support. DropzoneS3UploadForm and DropzoneS3UploadFormView.
Ensure storage ``location`` is taken in to account when generating the key prefix.