Huge work; i'm too tired to write commit message for all of it. Pleez let me sleep acouple of hours. Made most tests work. Started SBC.

sld.py

@@ -0,0 +1,9 @@
+#!/usr/bin/python3
+# Slang .sld parser
+# .sld files are used for definition of built-in, implementation-provided, external and native components.
+
+from .tokens import *
+from utils import *
+
+
+# by Sdore, 2020