FIX: topup out file and params
Merge branch 'master' into tst/martin

* master:
  Fixed file extension
  Fixed test files import.
  fixed possible values for -datatype parameter of tracks2prob interface. Previous values were in error. correct values obtained from: http://www.brain.org.au/software/mrtrix/general/formats.html#datatypes
  autogenerated tests
  added dummy files for testing new mrtrix interfaces
  updated CHANGES log
  Updated new mrtrix interfaces to new out_file format
  Added GenerateDirections, FindShPeaks, Directions2Amplitude interfaces wrapping gendir, find_SH_peaks and dir2amp mrtrix commands.
  tst: auto test generation for FUGUE
  fix: warp/unwarp arg parsing for use w/o an in_file
  fix: typo in fugue parameter
  add: pycharm .idea/ directory to .gitignore
fix: fixed autotest for applytopup
Merge pull request #1 from satra/tst/martin

Tst/martin
Merge pull request #750 from mluessi/fix_topup

FIX: topup out_base and params