Implement waso functionality

Author: djmarques

docs/source/tutorial_3.ipynb

@@ -6647,6 +6647,24 @@
     "`circStudio` contains several algorithms to detect inactivity periods in actigraphy recordings. In this tutorial, we will illustrate this functionality using the Roenneberg (also known as MASDA) algorithm."
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "f6c58b77-30c2-44f4-856f-498e69b51409",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Code here"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "8329dcdb-620a-46c7-b47d-a1a43487adae",
+   "metadata": {},
+   "source": [
+    "`circStudio` implements a method to approximate the WASO (wake after sleep onset metric) based on the use of the Roenneberg algorithm (which detects consolitated periods of sleep) and a epoch-by-epoch rest/activity scoring algorithm (either Cole-Kripke, Sadeh or Scripps) to detect wake periods during a consolidated period of sleep. The functionality returns a tuple containing daily waso, as well as mean waso:"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 4,