Moved imports out of function calls, setup __all__ and made it more clear where the resample call in map.py comes from
Moved net/util.py to util/net.py for consistency.  Updated relevant imports to account for the change.
added a file
Moved code out of __init__.py but kept external interface the same.
Cleaned up namespace for the sources
added file for separating map factory from __init__
PEP 8 import compliance
cleaned up import* namespace via __all__
moved import statements out of function calls
moved map_factory code out of map/__init__.py