Add TODO

diff --git a/TODO b/TODO
new file mode 100644 (file)
index 0000000..59f8bd1
--- /dev/null
+++ b/TODO
@@ -0,0 +1,7 @@
+Allow spaces.
+
+Allow '&&' and 'AND'.
+
+Allow '||' and 'OR'.
+
+Forbid stupid expressions: double NOT, extra parens and so on.