v2.1.1

Fixes

• some issues in parallel environments (eg. shared file systems on clusters)
  in conjunction with enabled trajectory cache [default]).
• File-logging disabled by default
• No files are written to your home directory until you request it (eg. by setting the
  config directory [pyemma.config.cfg_dir = "path" or invoke pyemma.config.save(filename)]

Improvements

• Parallel assignment of cluster centers via threads.