Fixed a localJCS transpose bug, added a test for writting a model

[pariterre]

No description provided.

[codecov]

Codecov Report

Merging #195 (25c8416) into master (4612c8a) will increase coverage by 0.36%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #195      +/-   ##
==========================================
+ Coverage   77.10%   77.46%   +0.36%     
==========================================
  Files          94       94              
  Lines        9560     9591      +31     
==========================================
+ Hits         7371     7430      +59     
+ Misses       2189     2161      -28     

Impacted Files	Coverage Δ
src/ModelWriter.cpp	97.50% <100.00%> (+16.34%)	⬆️
src/RigidBody/IMUs.cpp	63.70% <100.00%> (+1.61%)	⬆️
src/RigidBody/Segment.cpp	86.15% <100.00%> (ø)
src/Utils/Rotation.cpp	50.27% <100.00%> (ø)
test/test_biorbd.cpp	100.00% <100.00%> (ø)
src/ModelReader.cpp	64.38% <0.00%> (+0.44%)	⬆️
src/RigidBody/Joints.cpp	56.08% <0.00%> (+0.59%)	⬆️
src/RigidBody/RotoTransNodes.cpp	62.31% <0.00%> (+10.14%)	⬆️

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[pariterre]

This should fix #194