0.2.1 Alpha Release

[0.2.1] - 2019-06-07

Added

• Definition spec field to specify a class representative of key value pairs for
  definitions with primitives which are dictionaries
• Auto generation of documentation for operation implementations, models, and
  sources. Generated docs include information on configuration options and
  inputs and outputs for operation implementations.
• Async helpers got an aenter_stack method which creates and returns and
  contextlib.AsyncExitStack after entering all the context's passed to it.
• Example of how to use Data Flow Facilitator / Orchestrator / Operations by
  writing a Python meta static analysis tool,
  shouldi

Changed

• OperationImplementation add_label and add_orig_label methods now use op.name
  instead of ENTRY_POINT_ORIG_LABEL and ENTRY_POINT_NAME.
• Make output specs and remap arguments optional for Operations CLI commands.
• Feature skeleton project is now operations skeleton project

Fixed

• MemoryOperationImplementationNetwork instantiates OperationImplementations
  using their withconfig() method.
• MemorySource now decorated with entry_point
• MemorySource takes arguments correctly via config_set and config_get
• skel modules have long_description_content_type set to "text/markdown"
• Base Orchestrator __aenter__ and __aexit__ methods were moved to the
  Memory Orchestrator because they are specific to that config.
• Async helper aenter_stack uses inspect.isfunction so it will bind lambdas