Check compatibility with 'workflow' module, version 7.x-2.0

This is to inform you that the Workflow module has a new version 7.x-2.0, which is not code compatible with the previous version.
Workflow now has two modes: the conventional 'Workflow Node', and the new 'Workflow Field'. The latter implements a new field type.

Your module is an add-on to the workflow module. Please check if it still works with with new version, and let me knwo if you need help. I'll try to complete the change records.