commit 1c9f25ad2e6c350087baa137f0458d2a1cda3107
Author: Leszek Koltunski <leszek@koltunski.pl>
Date:   Mon Jul 11 15:01:09 2022 +0200

    Add the plus icon.

diff --git a/src/main/res/drawable/plus.png b/src/main/res/drawable/plus.png
new file mode 100644
index 00000000..0f580927
Binary files /dev/null and b/src/main/res/drawable/plus.png differ