- Refactored the `publish` and `unpublish` management commands to use boto instead of s3cmd.
- `build` and `publish` management commands use file mimetypes instead of a regex on the filename to decide if a file will be gzipped.
- `publish` management command includes --force and --dry-run uploads to force an upload of all file, regardless of changes, and to print output without uploading files, respectively.
- `publish` management command now pools uploads to increase speed