feat!: Update dunbar version

The main difference is how the header and footer are handled. Before
they were inserted as "include_markup", but now they are as "include".

1 files changed, 3 insertions, 0 deletions

diff --git a/ext/teaching.awk b/ext/teaching.awk
new file mode 100644
index 0000000..07aa590
--- /dev/null
+++ b/ext/teaching.awk
@@ -0,0 +1,3 @@
+BEGIN {
+	define("solution-link", "<div class=\"exercise-solution\">&lt;", " &gt;</div>")
+}