Merge branch 'nat-master' into master

examples/test_cond.csn

@@ -0,0 +1,36 @@
+(
+  ; test else
+
+  (cmp 0 5
+    (eq? (fault))
+    (else? (ld r0 15))
+    (lt? (fault)) ; This should produce a warning
+  )
+  (cmp 15 r0
+    (ne? (fault "else did not run")))
+
+  (ld r0 0)
+
+  (cmp 0 5
+    (lt? (nop))
+    (else? (fault "fallthrough to else"))
+  )
+
+  ;
+
+  (ld r8 0)
+
+  (ld r0 1
+    (else? (add r8 1))
+  )
+
+  (sub r0 1
+    (pos? (fault))
+    (else? (add r8 1))
+  )
+
+
+  (cmp r8 2
+    (ne? (fault))
+  )
+)