Hopefully a better fix for the sdist problem.

Removing trailing slashes from MANIFEST.in file.  Why is this needed?
No idea, i hate distutils

MANIFEST.in

@@ -4,10 +4,10 @@ include CONTRIBUTORS.rst
 include overviewer.py
 include contribManager.py
 include sample_config.py
-recursive-include overviewer_core/ *.py
-recursive-include overviewer_core/src/ *.c *.h
-recursive-include overviewer_core/src/primitives/ *.c *.h
-recursive-include overviewer_core/data/ *
-recursive-include contrib/ *.py
-recursive-include docs/ *
+recursive-include overviewer_core *.py
+recursive-include overviewer_core/src *.c *.h
+recursive-include overviewer_core/src/primitives *.c *.h
+recursive-include overviewer_core/data *
+recursive-include contrib *.py
+recursive-include docs *
 prune docs/_build