MAINT: tidy up and migrate to main

Author: mmcky

.github/workflows/ci.yml

@@ -2,7 +2,7 @@ name: continuous-integration
 
 on:
   push:
-    branches: [master]
+    branches: [main]
     tags:
       - 'v*'
   pull_request:

setup.py

@@ -5,10 +5,10 @@
 VERSION = "v0.3.1"
 
 LONG_DESCRIPTION = """
-This package contains a [Sphinx](http://www.sphinx-doc.org/en/master/) extension
+This package contains a [Sphinx](http://www.sphinx-doc.org/) extension
 for producing exercise and solution directives.
 
-This project is maintained and supported by [najuzilu](https://github.com/najuzilu).
+This project is maintained and supported by the Executable Books Project.
 """
 
 SHORT_DESCRIPTION = "A Sphinx extension for producing exercises and solutions."