Set favicon

Author: domdfcoding

doc-source/_templates/base.html

@@ -2,4 +2,5 @@
 {% extends "!base.html" %}
 {% block extrahead %}
 	<link href="{{ pathto("_static/style.css", True) }}" rel="stylesheet" type="text/css">
+	<link rel=icon href=https://sphinx-toolbox.github.io/assets/sphinx_toolbox.ico sizes="48x48" type="image/vnd.microsoft.icon">
 {% endblock %}

repo_helper.yml

@@ -17,6 +17,7 @@ enable_tests: false
 enable_conda: false
 on_pypi: false
 docs_url: https://contributing-to-sphinx-toolbox.readthedocs.io
+preserve_custom_theme: true
 
 python_versions:
  - '3.8'