Remove requirement on setuptool >=18.5

• Remove ez_setup, requiring pre-installed setuptools on user system
• Update rdflib minimum version to not require html5lib
• Use latest schema-salad with debugging improvements
• Enable post install testing with py.test

1.0.20170213175853

When on_error=continue, do not execute downstream steps connected to …

1.0.20170119182607

Rework how identifiers are rewritten in packing to handle $imports. (…

1.0.20170118141124

Receiving output counts as making progress. (#276)

1.0.20170112185927

Use custom set to uniquenames() when workflow packing. (#273)

1.0.20170112154257: Fix packing when files are in multiple directories. (#271)

* Fix packing when files are in multiple directories.
* Ensure that repacked ids are unique.
* Sort run step identifiers for stable id renaming.
* Fix regression in --print-deps calculating relative directories.

1.0.20170111193653: Use schema_salad functions file_uri and file_uri_path (#269)

* Use schema_salad functions file_uri and file_uri_path for more correct file URI
handling.
* Remove dependency on pathlib2.

1.0.20170105144051

Be more tolerant of workflow errors, especially when on-error=continu…

1.0.20161227200419

Relax ruamel.yaml pin (#262)

1.0.20161223144155

Add ability to override logger handler so caller can provide own logg…