Developed originally by Milan Crha for Fedora, copied and updated
by Patrick Ohly.
From Milan:
There are going to be made huge libecal API changes, as huge as it
deserved a version bump from 1.2 to 2.0, and together with it a small
libebook API changes, most likely being part of the evolution-data-
server 3.33.2 release, which is planned for May 20. More about this can
be found here:
https://mail.gnome.org/archives/desktop-devel-list/2019-April/msg00016.html
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>