modify EMG selection from Analog channels (Analog Labels from each file)
add shoulder, elbow, and writs JC, and setup files for GU markerset
Fixes #1
Merge claudios-feature-additionalJCs (pull request #1)

add shoulder, elbow, and writs JC, and setup files for GU markerset
implement C3D2MAT_btk
add src/shared folder
add CHANGES.txt
add memory of last path + remove warnings in setSubjectValuesFromFile.m
modify fcut from str to num in staticParametersGeneration.m
modify COPFiltering.m to correctly select non-zero values
modify filtering of data from FP type 1 + COP transformation from local to global
modify staticConfigurationFileGeneration.m to account for the previous change of fcut
modify filteringDataFPtype1.m to account for all zero values from a FP
replace 0 with NaN in trc and modify DataInterpolation
change matfiltfilt2 in ZeroLagButtFiltfilt:filtering markers only when visible
set missingCounter_max in DataInterpolation.m: compute according to the video frame rate
correct HJC computation with Harrington method (HJCHarrington.m)
update CHANGES.txt
fix ZeroLagButtFiltfilt.m
modify retrieval of analog data: they can be stored in any achannel, even before those dedicated to force data