🐛 FIX: RTD fail - install extension locally

Author: najuzilu

.readthedocs.yml

@@ -12,4 +12,7 @@ sphinx:
 python:
   version: 3.7
   install:
-    - requirements: docs/requirements.txt
+    - method: pip
+      path: .
+      extra_requirements:
+        - rtd

tox.ini

@@ -19,7 +19,7 @@ extras = testing
 deps =
 	sphinx2: sphinx>=2,<3
 	sphinx3: sphinx>=3,<4
-commands = pytest {posargs}
+commands = pytest --verbose {posargs}
 
 [testenv:docs-{update,clean}]
 extras = rtd