Flatten submit package structure

submit/model/c4.py

@@ -0,0 +1,9 @@
+"""C4: C3 with bounded source attention and a null source."""
+from .crg import CRG
+
+
+class C4(CRG):
+    def __init__(self, **kwargs):
+        super().__init__(use_imputer=True, use_joint_draws=True,
+                         use_final_gate=True, use_source_attention=True,
+                         reliability_update=False, use_low_rank=False, **kwargs)