Long paths within file tree break compile

[Joeyrsp]

Describe the bug
Running tweego on a folder with deeply nested children or a very long name results in an error and fails the process.
Presumably related to the old windows max path length restriction of ~255.

To Reproduce

1. Take any working twee project folder.
2. Create a folder or set of folders with sufficiently long names (e.g. ./abcdefghijklkmnopqrstuvwxyz/abcdefghijklkmnopqrstuvwxyz/abcdefghijklkmnopqrstuvwxyz/abcdefghijklkmnopqrstuvwxyz/abcdefghijklkmnopqrstuvwxyz/abcdefghijklkmnopqrstuvwxyz/abcdefghijklkmnopqrstuvwxyz/abcdefghijklkmnopqrstuvwxyz/abcdefghijklkmnopqrstuvwxyz)
3. Run tweego (e.g. tweego -o "../index.html" .)
4. Receive error: warning: path .: CreateFile abcdefghijklkmnopqrstuvwxyz\abcdefghijklkmnopqrstuvwxyz\abcdefghijklkmnopqrstuvwxyz\abcdefghijklkmnopqrstuvwxyz\abcdefghijklkmnopqrstuvwxyz\abcdefghijklkmnopqrstuvwxyz\abcdefghijklkmnopqrstuvwxyz\abcdefghijklkmnopqrstuvwxyz: The system cannot find the path specified.

Expected behavior
There should be no errors and it should succeed.

Desktop (please complete the following information):

• Tweego Version: 2.1.1+81d1d71
• OS & Version: Windows 10