[gen.sh] add "last updated" section at the bottom of every page

gen.sh

@@ -17,15 +17,24 @@ echo "Generating pages"
 for file in site-src/*; do
     bn=$(basename $file .wtn)
     echo "  $file -> site/$bn.html"
+
+    tmp=$(mktemp)
     # if the file has macros, expand them
     if grep "#makro" $file >/dev/null; then
-        tmp=$(mktemp)
         $MAKROS $file > $tmp
-        ./format $tmp site/$bn.html
-        rm $tmp
     else
-        ./format $file site/$bn.html
+        cp $file $tmp
     fi
+
+    if git log | grep "\w*\[$bn\]" > /dev/null; then
+        echo "\n\nLatest changes to this page:\n\n" >> $tmp
+        echo '``' >> $tmp
+        git log --grep="\[$bn\]" --format="%as:%s" | sed "s/\[.*\]//g" >> $tmp
+        echo '``' >> $tmp
+    fi
+
+    ./format $tmp site/$bn.html
+    rm $tmp
 done
 
 # Generate the site index