Changes in version 4.82:

• Fixed various anomalies in working with biber, especially under error conditions.
• Fixed various anomalies with use of -bibtex- and -bibtex-cond options.
• Fixed problem that -Werror worked only with bibtex and not biber. (This is the option that causes latexmk to return a non-zero exit code to flag an error when there are missing-citation messages in the .log file.)
• Added -dir-report-only option.
• Fixed lack of quoting on command line to kpsewhich.
• Implemented support for hilatex (-hnt option, $hnt_mode configuration variable).
• Allow sleep times of under a second. (That gives very responsive performance on fast computers.)
• Support ^^ format in .log file for non-ASCII bytes/characters.
• Document $filetime_causality_threshold configuration variable.
• Other documentation improvements.