Batcave

- Changed
- Fixed bad imports.
- Fixed bad return in str_to_pythonval.
- Change xml parser to standard in xml module.
- Rename constant in data module to uppercase.
- Fix issue in data module when returning columns in XML table.
- Upgrade PyQt5 to 5.8.
- Upgrade setuptools to 34.2.0.

- Changed
- Improved Cmd error handling.
- Fixed import issue.

- Added
- Created fileutil module from file-related init functions.

- Changed
- Moved system-related init functions to sysutil.
- Convert expander to a class.
- Don't raise custom exceptions inside standard ones.
- Fix typo in str_to_pythonval().
- Cleanup fileutil.spew().

- Removed
- Move procedure module to BatCave.

- Changed
- Update setup.py to include all required modules.

- Changed
- Update CxFreezeBuilder to handle Python 3.6.0 issue with process module.

- Added
- sysutil.is_user_administrator()