formats:
    - pdf
requirements_file: requirements_rtfd.txt
python:
    version: 3
    setup_py_install: true

build:
  image: latest
formats:
  - pdf
requirements_file: requirements_rtfd.txt
python:
  version: 3.6
  setup_py_install: true

Add RTD Python 3.6 support.
Add RTD Python 3.6 support.
