bio-guoda/preston: 0.5.3

• allow for on the fly bzip2 uncompression of bzip2 compressed content via bzip2 prefix (e.g., bzip2:hash://sha256/abc123... returns uncompressed content assuming that abc123 is a bzip2 compressed resource
• allow for on-the-fly thumbnail generation of image content via thumbnail prefix (e.g., thumbnail:hash://sha256/abc123.... returns a jpg thumbnail max height/width of 256 pixels without changing the image ratio. #217

• continue processing when encountering malformed nquads #214
• switch rdf4j instead of Jena RIOT (just a change in rdf library, not necessarily an improvement)

n/a