Summarized Changelog:
- Fix EOF handling while reading in bulk or from strings.
- Fix lax handling of string errors.
- Fix reading from a null-delimited socket.
- Fix colliding blank nodes when parsing TriG.
- Fix missing parse error messages.
- Fix parsing "a" abbreviation without padding whitespace.
- Fix parsing TriG graphs with several squashed trailing dots.
- Fix resolving some URIs against base URIs with no trailing slash.
- Improve documentation.