New features:
- Added validate tool which checks parse errors, validating digests and other headers #60 (Sebastian Nagel)
- WarcReader gained a calculateBlockDigest() mode which populates a corresponding WarcRecord.calculatedBlockDigest() #60 (Sebastian Nagel)
- WarcDigest: SHA-2 support, base64 and encoding auto-detection #59 (Sebastian Nagel)
Bugs fixed:
- Setting the record version after calling date() would produce the incorrect WARC-Date precision #58
- The lenient HTTP parser now accepts requests missing the HTTP version field (improves compatibility with the non-standard records produced by the ArchiveWeb.page browser extension)