* [AP_STAGE,DEB] Added log messages for performance tracking of automated process stages.
* [DATETIME_EXT,NEW] Added ISO8601 and XSD dateTime atoms for get_time/1.
* [LOGGING,DEB] Use ISO8601 dateTime for log messages (more concise and easier to read than HTTP date time.
* [MATH_EXT,FIX] Rewrote betwixt/3.
* [WEB_MESSAGE,NEW] Added log_web/2 that allows category filtering on log message display (also lifting the maximum number of rows restriction).