• Complain if root directory is missing.

• There’s probably a lot of redundancy now between ElFinderFtp::Pathname and ElFinderFtp::FtpPathname, since this is based off of the preexisting Ruby ElFinder backend, which used the Ruby stdlib’s ::Pathname where I’ve used ElFinderFtp::Pathname.

• I deleted all the tests but didn’t write new ones yet. I probably should.