Merge branch 'doku_rework' of https://github.com/magpylib/magpylib into doku_rework

Author: peter-leitner

.binder/labconfig/default_setting_overrides.json

@@ -0,0 +1,8 @@
+{
+    "@jupyterlab/docmanager-extension:plugin": {
+      "defaultViewers": {
+        "markdown": "Jupytext Notebook",
+        "myst": "Jupytext Notebook"
+      }
+    }
+  }

.binder/postBuild

@@ -0,0 +1,6 @@
+# Stop everything if one command fails
+set -e
+
+# See https://github.com/mwouts/jupytext/issues/803#issuecomment-982170660
+mkdir -p ${HOME}/.jupyter/labconfig
+cp .binder/labconfig/* ${HOME}/.jupyter/labconfig