Adding upstream version 0.11.12.

Signed-off-by: Daniel Baumann <daniel@debian.org>

.readthedocs.yml

@@ -0,0 +1,21 @@
+version: 2
+build:
+  os: ubuntu-lts-latest
+  tools:
+    python: "mambaforge-latest"
+  jobs:
+    pre_install:
+      - git update-index --assume-unchanged .rtd-environment.yml docs/conf.py
+conda:
+  environment: .rtd-environment.yml
+sphinx:
+  builder: html
+  configuration: docs/conf.py
+  fail_on_warning: false
+python:
+  install:
+    - method: pip
+      extra_requirements:
+        - all
+        - docs
+      path: .