Fix after uvicorn 0.12.0 - Ship extra dependencies
Uvicorn no longer ships extra dependencies uvloop, websockets and httptools as default. To install these dependencies use uvicorn[standard].
cf
@@ -24,7 +24,7 @@ flower==0.9.5 # https://github.com/mher/flower
{%- endif %}
{%- endif %}
{%- if cookiecutter.use_async == 'y' %}
-uvicorn==0.12.2 # https://github.com/encode/uvicorn
+uvicorn[standard]==0.12.2 # https://github.com/encode/uvicorn
wsproto==0.15.0 # https://github.com/python-hyper/wsproto/
{%- endif %}
