we have liftoff - lisp code still needs fixing

ctree/ortree/sigbuf all tests working

test/unit_tests/ctree_15/test.prsim

@@ -0,0 +1,26 @@
+
+system "echo '0'"
+
+set t.in[0] 1
+set t.in[1] 1
+set t.in[2] 1
+set t.in[3] 1
+set t.in[4] 1
+set t.in[5] 1
+set t.in[6] 1
+set t.in[7] 1
+set t.in[8] 1
+set t.in[9] 1
+set t.in[10] 1
+set t.in[11] 1
+set t.in[12] 1
+set t.in[13] 1
+set t.in[14] 1
+
+system "echo '1'"
+
+cycle
+mode run
+assert t.out 1
+
+