These features were the focus of the 2.3 release:
VCL 2.4 is currently being worked on. These are the main areas on which development is focused:
This is a dynamic list of open JIRA issues for release (need to debug why jira plugin is not working - use this direct link until it is fixed):
jiraissues:anonymous=true|url=https://issues.apache.org/jira/sr/jira.issueviews:searchrequest-xml/temp/SearchRequest.xml?pid=12310840&fixfor=12313579&resolution=-1&sorter/field=priority&sorter/order=DESC&tempMax=1000