Wetator 2.3.0

• HtmlUnit 2.62.0 (for more see https://htmlunit.sourceforge.io/changes-report.html#a2.62.0)
• new command line option -var to support separate files with variable definitions (https://wetator.org/documentation/reference/command-line-options/)
• new command line option -append to append the result report from the current run to an existing one (https://wetator.org/documentation/reference/command-line-options/)
• POI 5.2.2