dependency extension: import_as support for python

created support for dependency in the style of: import _____ as ______. 

introduced more complexity in the lizard extension code that looks for "as".
the current code assumes that a programmer does not use more than 5 dependency in one line in the form of import dep1, dep2, dep3, dep4, dept5 as lib1, lib2, lib3, lib4, lib5. (may be a problem in edge cases)

in addition, I created a simple parser for the #include style dependency. however, this by no means makes the #include fully functional yet (which I intend to work on next)

*passed pep8 test