MCR support

[casperdcl]

removes the need for users to have matlab & licence

• add matlab container runtime (MCR)
• update linters
• build & test framework updates

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• fixes MATLAB independence #1

[codecov]

Codecov Report

Merging #14 (2664726) into master (dfb7dbd) will decrease coverage by 39.20%.
The diff coverage is 19.64%.

@@             Coverage Diff             @@
##           master      #14       +/-   ##
===========================================
- Coverage   57.55%   18.34%   -39.21%     
===========================================
  Files           5        5               
  Lines         245      278       +33     
===========================================
- Hits          141       51       -90     
- Misses        104      227      +123     

Impacted Files	Coverage Δ
spm12/__main__.py	0.00% <ø> (ø)
spm12/cli.py	0.00% <0.00%> (-100.00%)	⬇️
spm12/regseg.py	11.86% <0.00%> (-37.86%)	⬇️
spm12/utils.py	36.11% <30.00%> (-38.36%)	⬇️
spm12/__init__.py	40.00% <100.00%> (-50.00%)	⬇️

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