Initial mdbook project files

tools/convert-quotes.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+set -eu
+
+dir=$1
+
+mkdir -p "tmp/$dir"
+
+for f in $dir/*.md
+do
+    cat "$f" | cargo run --bin convert_quotes > "tmp/$f"
+    mv "tmp/$f" "$f"
+done