TMFC toolbox v.1.6.0

1. Added support for robust weighted least squares (rWLS) option for TMFC analysis (Diedrichsen & Shadmehr, 2005).

2. Added new format for subject folder naming. Can be selected during subject selection.
   a) TMFC subject naming format ('Subject_XXXX');
   b) Original subject naming format (use original subject folder names)