Paragraph Release

This release doesn't offer very much besides updated dependencies. Since the EncFS Library was not available as a dependency it even got updated and synced with its upstream repository as source code.
Some WebDAV backends might be working a bit better in terms of time and date handling.
And we added the paragraph sign to the list of valid filename characters.

The Code is prepared to be used with Java11 but we kept Java8 to avoid any problems with older JRE installations, which don't automatically switch to newer releases.