--format json prints {"greeting": ..., "name": ...}. Should it also
include the hello-hut version, so scripts can detect behaviour changes?
Before I write the patch I'd like a decision on the field name:
versionhello_hut_versionI'd go with
version: the output is already namespaced by the tool.
Parking this until after 0.2.0.
Let's go with
version. Leaving this pending until someone sends the patch — Jun, are you still interested?