update documentation

pinhead84 · pinhead84 · commit 8e6ce937953e · 2021-03-15T15:04:30.000+01:00
fixes #47
diff --git a/doc b/doc
@@ -1 +1 @@
-Subproject commit 7dd9087c1d8f3e20a423179b2ef914a042f8c29e
+Subproject commit 28e0df988a6a17b3507cc6ddc1ea2cce7b29e8e7
