Move FML from Gusto to Firedrake

Author: JDBetteridge

firedrake/__init__.py

@@ -74,6 +74,7 @@
 from firedrake.checkpointing import *
 from firedrake.constant import *
 from firedrake.exceptions import *
+from firedrake.fml import *
 from firedrake.function import *
 from firedrake.functionspace import *
 from firedrake.interpolation import *

firedrake/fml/__init__.py

@@ -0,0 +1,2 @@
+from gusto.fml.form_manipulation_language import *        # noqa
+from gusto.fml.replacement import *                       # noqa