- update to 0.16.16
* Allow SORD_API to be defined by the user
* Fix command line help interface of sord_validate
* Fix dependencies in pkg-config file
* Override pkg-config dependency within meson
* Port sord_validate to pcre2
* Switch to external zix dependency
OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/sord?expand=0&rev=40
