Assorted Improvements in Python Fire v0.3.0

• Use Fire on third-party code without making any code changes: python -m fire <module>
• Docstring parsing fix for all lines are blank f01aad347632791e3438c1a753e42a514520d690
• Improved parsing of numpy-style docstrings
• #187 Expose built-in functions from the standard library (e.g. sin, cos)
• #149 Support objects implementing __getattr__
• #205 Fix ctrl-C handling in help screens
• Support functools.wraps and lru_cache decorated functions
• Better support for objects with properties
• Objects with custom __str__ are now treated as Values. E.g. If such an object appears in a dict, the dict will still print in line-by-line mode rather than showing a help screen by default.
• Formatting on Windows works properly now