FIX: adding ICA_AROMA to fsl __init__.py

[jdkent]

Fixes: being able to import ICA_AROMA like other fsl packages

Changes proposed in this pull request

• adds ICA_AROMA to fsl/interfaces/__init__.py

[effigies]

Unfortunately, this is changing the API, since fsl.interfaces.ICA_AROMA is the module, not the class, so changing this has the potential to induce errors for anybody using this.

If it's worth making the change, we should make the name of the class and the module different, along with importing the class into __init__.py. I'd suggest changing the file name to ica_aroma.py or just aroma.py, and I'm inclined to leave the class name the same.

@satra I'd appreciate your input on a potential API change.

[satra]

I'd suggest changing the file name to ica_aroma.py or just aroma.py, and I'm inclined to leave the class name the same.

i like that from .aroma import ICA_AROMA

let's make the file name change and leave the class intact.

[codecov-io]

Codecov Report

Merging #2105 into master will increase coverage by 3.8%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master    #2105     +/-   ##
=========================================
+ Coverage   48.56%   52.36%   +3.8%     
=========================================
  Files         116      119      +3     
  Lines       23598    23770    +172     
=========================================
+ Hits        11461    12448    +987     
+ Misses      12137    11322    -815

Flag	Coverage Δ
#smoketests	52.36% <100%> (+3.8%)	⬆️

Impacted Files	Coverage Δ
nipype/interfaces/fsl/__init__.py	100% <100%> (ø)	⬆️
examples/fmri_fsl_feeds.py	96.61% <0%> (ø)
nipype/interfaces/fsl/ICA_AROMA.py	68.42% <0%> (ø)
examples/fmri_fsl_reuse.py	75.67% <0%> (ø)
nipype/pipeline/engine/utils.py	56.71% <0%> (+0.27%)	⬆️
nipype/interfaces/io.py	35.57% <0%> (+0.64%)	⬆️
nipype/utils/filemanip.py	73.82% <0%> (+1%)	⬆️
nipype/pipeline/engine/nodes.py	67.26% <0%> (+1.52%)	⬆️
nipype/pipeline/engine/workflows.py	58.23% <0%> (+2.03%)	⬆️
nipype/algorithms/modelgen.py	46.04% <0%> (+3.72%)	⬆️
... and 10 more

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