Split school_book_type out of types.h

- Rename to school_book
- Remove pointless spell_idx_list indirection

1 files changed, 3 insertions, 0 deletions

diff --git a/src/school_book_fwd.hpp b/src/school_book_fwd.hpp
new file mode 100644
index 00000000..46363da6
--- /dev/null
+++ b/src/school_book_fwd.hpp
@@ -0,0 +1,3 @@
+#pragma once
+
+struct school_book;