Macros
If a service / host is not in a service/host group, then the HOSTGROUPNAME/ SERVICEGROUPNAME macros can lead to segfault. This patch fixes this issue.
To be released in april 2021
External commands
Engine hosts a gRPC server now. All the external commands can be executed through this new server now.
Flapping
The internal flapping object does not reference notifiers by host name and service description but by host id and service id.