Stop converting the filename to lowercase

This leads to problems for tools integrating with pydocstyle, e.g., atom
linter-pydocstyle

Closes #179

Author: sigmavirus24

src/pydocstyle.py

@@ -151,10 +151,6 @@ class Module(Definition):
     module = property(lambda self: self)
     all = property(lambda self: self._all)
 
-    def __init__(self, *args, **kwargs):
-        super(Module, self).__init__(*args, **kwargs)
-        self.name = self.name.lower()
-
     def __str__(self):
         return 'at module level'
 

src/tests/test_cases/test.py

@@ -339,5 +339,5 @@ def inner_function():
         """Do inner something."""
         return 0
 
-expect(__file__.lower() if __file__[-1] != 'c' else __file__[:-1].lower(),
+expect(__file__ if __file__[-1] != 'c' else __file__[:-1],
        'D100: Missing docstring in public module')