Add documentation

doc/_static/custom.css

@@ -0,0 +1,16 @@
+/* override table width restrictions as found on https://github.com/getpelican/pelican/issues/1311 */
+.wy-table-responsive table td, .wy-table-responsive table th {
+    /* !important prevents the common CSS stylesheets from
+       overriding this as on RTD they are loaded after this stylesheet */
+    white-space: normal !important;
+}
+
+.wy-table-responsive {
+    overflow: visible !important;
+}
+
+/* Add some more space between the function descriptions */
+dl.function,
+dl.class {
+    margin-bottom: 1em;
+}