Previous version was 5.3.x (released on October, 2019), see what was new in that release at:
This is a draft of new features added in this version, manually updated, thus not always synchronized with what is new in source code repository.
Flexible headers management $x_hdr exported variables.
Added new cfgt.list and cfgt.clean RPC commands
Added new pseudo-variables:
Added path value to xavp_rcd location record
Added xavp_rcd_mask parameter to control what values to skip