++ A *candidate API change*: An API change that meets all requirements
+ to become active (see below). Currently, the requirements are:
+
+ + No -1 nor -2 from from any human reviewer.
+
+ + All verify jobs (except vpp-csit ones) pass.
+
+ + +1 from a VPP committer.
+
+ The reason is to avoid situations where an API change becomes active,
+ but the VPP committers are unwilling to merge it for some reason.
+
++ The *active API change*: The candidate API change currently being processed