1.0.48

• SNI support has been added. A new service, pure-certd, can run
  external code written in any language in order to map SNI names to TLS certificates.
• External authentication handlers get a new
  AUTHD_CLIENT_SNI_NAME environment variable set when the client uses SNI.
• TLS certificates and keys can now be in different files.
• make install does not overwrite existing configuration files any
  more. The example files layout has changed.
• TLS 1.3 is enabled when using OpenSSL 1.1.x.
• TLS < 1.2 is disabled by default.
• Quirks for obsolete OpenSSL versions have been removed.
• Username _ftp can be used as an alternative to ftp everywhere.
• Password hashing parameters are now chosen according to locally
  available resources. The pure-pw command gets to new switches: -C (as
  a hint regarding the number of simultaneous login attempts) and -M
  (total memory, in MB, to reserve for password hashing).
• New translation: Albanian, thanks to Moisi Xhaferaj.
• The PRET command has been added. It can avoid opening useless data
  connections for nonexistent content.
• Dot-files are always displayed. We don't lie any more in some
  commands while not lying in other commands to respect the protocol.
• Support for RFC 2640 has been removed from the free version, as it
  was early, experimental, slow, mostly broken and unmaintained code.
• The NLST command doesn't perform globbing any more.
• The MLSD command now prepends the path to file names.