Enhance worker actor polling error handling
Enhance unknow resource errors management
Merge pull request #31 from botify-labs/feature/refactor_error_management

Feature/refactor error management
Version bump 0.1.31
Merge branch 'release/0.1.31'
Merge branch 'master' of github.com:botify-labs/python-simple-workflow

Conflicts:
	swf/__init__.py