• Avoid global multiprocessing locks (#611 -> #617)
• Add support for infinite iterables (#651)
• Fix missing attr pos when used in multi-threaded environment (#573)
• Do not join TMonitor if it is the current thread (#613 -> #641)
• Add OpenBSD NIX support (#638)
• Unit tests, general documentation fixes and tidying (e.g. #642)
• CI travis improvements
  • py37-dev -> py37 (#622)
  • fix py26