[BF] fix sidecars suggested by Sam

[arnaudbore]

Thank you @SamGuay

[codecov-commenter]

Codecov Report

Merging #243 (e5fc6a1) into master (229b5f7) will decrease coverage by 0.32%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master     #243      +/-   ##
==========================================
- Coverage   79.30%   78.98%   -0.32%     
==========================================
  Files          15       15              
  Lines        1005     1009       +4     
  Branches      212      214       +2     
==========================================
  Hits          797      797              
- Misses        163      165       +2     
- Partials       45       47       +2     

Flag	Coverage Δ
pytest	78.98% <66.66%> (-0.32%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
dcm2bids/acquisition.py	94.01% <57.14%> (-3.33%)	⬇️
dcm2bids/dcm2bids_gen.py	80.23% <100.00%> (ø)

[arnaudbore]

Fix also #242 and #241 :)