diff --git a/.gitignore b/.gitignore
index 3e7fabf..9f13e97 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,7 +14,6 @@ dist/
 *.hd5
 *.csv
 # *.html
-*.png
 *.dot
 *.xml
 .env
diff --git a/classes.png b/classes.png
new file mode 100644
index 0000000..accf8f9
Binary files /dev/null and b/classes.png differ
diff --git a/docs/_static/img/classes.png b/docs/_static/img/classes.png
new file mode 100644
index 0000000..accf8f9
Binary files /dev/null and b/docs/_static/img/classes.png differ
diff --git a/packages.png b/packages.png
new file mode 100644
index 0000000..5a18197
Binary files /dev/null and b/packages.png differ