[FIX] Fix SFTP connection against builtin Windows SFTP server

[Maartincm]

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Some fixes I had to do to make this work agains a built-in SFTP server running on my Windows 10 machine (using native OpenSSH server that is running sftp-server.exe under the hood).

Also, I added those .TrimEnd() to the properties that are being gathered from the server because those were coming with a newline at the end in my environment.

Feel free to ask anything, or request changes if needed.

Fixes #62