ENH: Improve user interface
ENH: Add step at the beginning to filter and set to zero negative values in tensors to avoid issues in registration
ENH: If no looping, compute average for the only preprocessing step for QC
STYLE: Create function to convert integers to std::string to avoid having to create a new ostringstream each time
ENH: Update DTI-Reg to prevent it from crashing when ANTs gives a warning
ENH: Add testing of python version because >2.5 required
Merge pull request #13 from adrienkaiser/master

ENH: Add DTI filtering + improve interface