start DEV 0.0.15

BACKLOG.md

src/covid19/blueprints/vaccination/vaccination_model.py

...ovid19/blueprints/vaccination/vaccination_model_import.py

src/covid19/blueprints/vaccination/vaccination_service.py

...id19/blueprints/vaccination/vaccination_service_update.py

src/covid19/blueprints/vaccination/vaccination_views.py

src/covid19/blueprints/who/who_service.py