Draft: Add more WDF adaptors

Closes #257

b_asic/__init__.py

 """B-ASIC - Better ASIC Toolbox.
 ASIC toolbox that simplifies circuit design and optimization.
 """
+
 # Python modules.
 from b_asic.core_operations import *
 from b_asic.graph_component import *
@@ -12,3 +13,4 @@ from b_asic.signal import *
 from b_asic.signal_flow_graph import *
 from b_asic.simulation import *
 from b_asic.special_operations import *
+from b_asic.wdf_operations import *