Ftp Versions Save

What's Changed

• Fix hang when using ExplicitTLS to certain servers. by @ncw in https://github.com/jlaffaye/ftp/pull/283
• Fix GetEntry / MLST for some servers - Fixes #321 by @ncw in https://github.com/jlaffaye/ftp/pull/322

Full Changelog: https://github.com/jlaffaye/ftp/compare/v0.1.0...v0.2.0