ref: isolate function handling from __future__ imports

[mgxd]

Re-attempt after #2148

[codecov-io]

Codecov Report

Merging #2150 into master will increase coverage by <.01%.
The diff coverage is 90.16%.

@@            Coverage Diff             @@
##           master    #2150      +/-   ##
==========================================
+ Coverage   72.32%   72.32%   +<.01%     
==========================================
  Files        1183     1185       +2     
  Lines       59008    59030      +22     
  Branches     8490     8490              
==========================================
+ Hits        42677    42694      +17     
- Misses      14947    14952       +5     
  Partials     1384     1384

Flag	Coverage Δ
#smoketests	72.32% <90.16%> (ø)	⬆️
#unittests	69.9% <90.16%> (ø)	⬆️

Impacted Files	Coverage Δ
nipype/utils/misc.py	74.1% <100%> (-4.09%)	⬇️
nipype/utils/tests/test_misc.py	100% <100%> (ø)	⬆️
nipype/utils/functions.py	100% <100%> (ø)
nipype/interfaces/utility/wrappers.py	85.18% <100%> (ø)	⬆️
nipype/pipeline/engine/workflows.py	78.82% <100%> (+0.03%)	⬆️
nipype/pipeline/engine/utils.py	79.45% <66.66%> (+0.02%)	⬆️
nipype/utils/tests/test_functions.py	82.75% <82.75%> (ø)

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[satra]

@mgxd - can you make sure master is merged into this.

[mgxd]

Yes, it is. Do you remember what error arose after merging this previously? If so, I could add a test for that.

[mgxd]

@satra pinging this again

[mgxd]

@satra let's try to get this in for 0.14

[satra]

@mgxd - can you create a milestone for 0.14, and add any issues that should be resolved for 0.14.

[mgxd]

@satra tests are passing - let's give it a shot