add option to select cover class in metadata

[wolnelektury.git] / lib / librarian

diff --git a/lib/librarian b/lib/librarian
index c87453a..40110cd 160000 (submodule)
--- a/lib/librarian
+++ b/lib/librarian
@@ -1 +1 @@
-Subproject commit c87453a1da79443d74132398e7dd1aaa83140fee
+Subproject commit 40110cdb916b003da032cb350fad27bd22f64602