2.0

Features
*  All registration parameters have auto defaults
*  Long option alias
*  Multi-planar registration
*  Multi-similarity registration
*  Overlap fraction penalty for native registration methods
*  Full support for irregular slice spacing
*  Superbuild
*  Non-aligned B-spline LUT

Backward incompatible changes
*  Remove short options
*  DRR/FDK/dose calc use IEC coordinates
*  GDCM becomes deprecated
*  Standalone executables will no longer be available, instead 
   they are merged into plastimatch executable:
   vf-invert, landmark-warp, drr, fdk, wed
*  Metric mi will default to Mattes for ITK methods (done)
*  Automatic tuning of regularization lambda as default (?)
*  xform=align_center -> xform=translation, optim=align_center

Documentation
*  Registration tutorial based on NA-MIC case library
*  MABS tutorial

Cleanup
*  Remove Pstring/bstring (done)
*  Remove unnecessary third party libraries (f2c, nocedal, sqlite?, lua?)
*  Evaluate if duplication between Stage_parms and Bspline_parms 
   can be removed
*  Re-evaluate B-spline loop template
*  DICOM uses module system

Wishlist

*  Autolabel (la,tsv1,tsv2)
*  Copy-free conversion between itk and native volumes
*  RTK wrapping
*  DRR/FDK dicom
*  Evaluate native vs itk jacobian
*  MSVC express multicore strategy (done, MSVC 2013 and higher)
*  Native rigid registration
*  Normalized MI
*  patient mask to support MRI
*  plastimatch gradient magnitude (done)
*  Proton/photon/electron dose calculation
** Add multi-beam to command file (done)
** Remove duplication of code for photons
*  RTPLAN support
*  Standalone GUI
