Monkeytoolbox

This release is identical to 0.4.0.

Fixed
- Error that prevents monkeytoolbox from being imported on Darwin. 6
- Import error in `open_new_securely_permissioned_file()` on Windows. 6

Fixed
- The location of the `py.typed` file so that type checking is now properly
supported

Added
- `get_os_version()`
- `get_hostname()`
- Support for type checking (py.typed marker file)

Changed
- `get_os()` raises `RuntimeError` if the operating system is not supported