cwltest 1.0.20180209171722: enhanced wheel testing in the release process

release process: split the wheel testing into py2 & py3 version #58 by @mr-c

cwltest 1.0.20180209145937: internal testing and release fixes

allow for testing of py3 as well #57 by @mr-c
don't forget the wheel in the release testing process #56 by @mr-c

cwltest 1.0.20180209122506: Add comparison for file contents

Added basic testsuite to cwltest itself #36 by @kapilkd13
Add comparison for file contents #52 by @anton-khodak
Release process refresh #55 by @mr-c

cwltest 1.0.20180208173352: added a default test timeout

Add default timeout #47 by @anton-khodak
Add py3 typesheds & testing #49 by @anton-khodak

cwltest 1.0.20180205212841: better release process

add release target ef71ec8 by @mr-c

cwltest 1.0.20180205192841: Handle directory paths better

Handle directory paths better #46 by @milos-ljubinkovic

cwtest 1.0.20180130081614: expected output doesn't have to include location & path

expected output doesn't have to include location & path #45 by @mr-c and @anton-khodak

cwltest 1.0.20180129111038: now with "should_fail" testing ability!

Add known failure testing capability #38 by @tom-tan
Enhance directory checks & refactoring #43 by @anton-khodak

cwltest 1.0.20170809112706: OS X, python 3, and more fixes

fix Nonetype not iterable error #23 by @kapilkd13
only use non-standard opts for cwltool under OS X #26 by @mr-c
relax the typing module version requirement #27 by @mr-c
avoid using exception.message, not necessarily available in python 3 #30 by @kapilkd13
Add lock around mkdtemp, which seems to be thread-unsafe #28 by @tetron and @mr-c
Add classname category to specify Python run time version in XML output file #33 by @manu-chroma
Build a universal python 2+3 wheel 45b57b0 by @mr-c

cwtest 1.0.20170715115658: Python 3 support, jUnit XML improvements, and more!

Add failure info to the jUnit XML report #15 by @bosonogi
When --verbose arg is used, don't capture stderr #17 by @buchanae
Set failure message for failed test case #18 by @bosonogi
Added additional conformance test arguments feature. #19 by @halilozercan
Python 3 support #20 by @manu-chroma
typing module dependency update #21 by @mr-c & @requires
add release test, MANIFEST.in, and fix Makefile #22 by @mr-c