Added Factor class
Added factor.marginalize; SizeError and ScopeError in Exceptions
Added Factor.normalize
changed directory structure src/ -> pgmpy/; moved tests/ to pgmpy/
added AUTHORS.rst
added setup.py --version=0.1.0
changed Exceptions to pgmpy.Exceptions in import statement
added install_requires dependencies in setup.py
moved CPD.py to Factor; changed import statement for CPD in BayesianModel
changed __init__.py to import Factor class directly
changed __init__.py to import BayesianModel class directly, removed CPD from it
changed __init__.py to import BayesianModel, Factor and Exceptions subpackage
modified __init__.py to import BayesianModel class directly
modified __init__.py to import BayesianModel class directly
modified __init__.py to import Factor class directly
modified __init__.py to import all the Exceptions directly
changed pgmpy.Exceptions -> from pgmpy import Exceptions
changed pgmpy.Exceptions -> from pgmpy import Exceptions
added import statement in all the examples
added import statement to all the examples