Minor interface cleanup

Author: kburns

dedalus/core/__init__.py

@@ -1,4 +0,0 @@
-
-from . import distributor
-from . import domain
-#from . import spaces

dedalus/core/timesteppers.py

@@ -7,9 +7,14 @@
 from .system import CoeffSystem
 from ..tools.array import apply_sparse
 
+
+# Public interface
+__all__ = []
+
 # Track implemented schemes
 schemes = OrderedDict()
 def add_scheme(scheme):
+    __all__.append(scheme.__name__)
     schemes[scheme.__name__] = scheme
     return scheme
 

dedalus/dev.py

@@ -1,12 +1,12 @@
 """Dedalus public interface."""
 
 # Import public interfaces from submodules
+from .core.arithmetic import *
+from .core.basis import *
 from .core.coords import *
 from .core.distributor import *
-from .core.basis import *
 from .core.field import *
 from .core.operators import *
-from .core.arithmetic import *
 from .core.problems import *
 from .core.timesteppers import *