Patch version 0.5.2
Patch version 0.5.2

* Allow any type of string
* Do not require mock for compat because it might not be installed

okfn/datapackage-py,okfn/datapackage-py,okfn/datapackage-model-py,datapackages/datapackage-py,sirex/datapackage-py,okfn/datapackage-model-py,sirex/datapackage-py,datapackages/datapackage-py