Initial data commit

Task/Unicode-variable-names/S-lang/unicode-variable-names.slang

@@ -0,0 +1,11 @@
+define ∆increment(∆ref) {
+  @∆ref++;
+}
+variable foo∆bar = 1;
+foo∆bar++;
+variable ∆bar = 1;
+∆bar++;
+∆increment(&∆bar);
+% foo∆bar should be 2 and ∆bar should be 3.
+print(foo∆bar);
+print(∆bar);