Changes

• @metataro: Fixes AttributeError when using process workers with mp start method 'spawn' #74
• @SimonBiggs: Fixes for Python 3.9 #78
• @cgarciae: Update dependencies + minimal python version support to 3.6.2 #89

Fixed bugs:

• [Bug] maxsize not being respected for thread.map #64

Closed issues:

• maxsize not being respected for process.map #55

Merged pull requests:

• lock-namespace #69 (cgarciae)
• Fix maxsize in process, task and thread #66 (charlielito)
• Update bug_report.md #65 (charlielito)
• fix/ci #62 (cgarciae)
• Update advanced.md #57 (isaacjoy)
• Re-export to_iterator #35 (PromyLOPh)

• Introduces the maxsize as an argument to to_stage and to_iterable.
• ordered now takes an optinal maxsize parameter.

• Fixed pl.task.from_iterable to solve #56
• pl.*.ordered implementations now based on bisect.insort.

• Lazily creates MANAGER object in pl.process to potentially avoid errors on Windows and OSX.

• flat_map now also allows the return argument to be an Awaitable[Iterable] consisten with pypeln < 0.4 versions.

• Includes some conditional depedencies & imports to support Python >= 3.6

• Lowered Python version requirement to 3.5, however to use the task module will only be available for versions >= 3.7.

• Big internal refactor:
  • Reduces the risk of potential zombie workers
  • New internal Worker and Supervisor classes which make code more readable / maintainable.
  • Code is now split into individual files for each API function to make contribution easier and improve maintainability.
• API Reference docs are now shown per function and a new Overview page was created per module.

Breaking Changes

• maxsize arguement is removed from all from_iterable functions as it was not used.
• worker_constructor parameter was removed from all from_iterable functions in favor of the simpler use_thread argument.

• Adds to_iterable function back to the API #35 (@PromyLOPh)

Adds

• ordered function in all modules, this orders output elements based on the order of creation on the source iterable.
• Additional options and rules for the depending injection mechanism. See Advanced Usage.
• All pl.*.Stage classes now inherit from pl.BaseStage.

Refactor + Update documentation