enh: composite norm based on eigenvectors of the brain mask coordinates
fix: removed transpose
sty: removed commented out section on eigenvector transform
fix: matplotlib backend set to agg, deprecation warning

set to agg to ensure multiproc plugin can be used.
deprication warning for new flag "bound_by_brainmask"
enh: added AFNI support

removed Siemens option - was not supported anyway.
fix: pep8, return parameters to conform to nipy to_matrix44
* enh: added voxel displacement maps, support for afni

* sty: some pep8 cleanup
* fix: convert nipy motion parameters to matrix using nipy
* api: added option to use particular threshold when creating brain mask internally
* enh: save mask used for global signal calculation
sty: pep8 cleanup
Merge branch 'master' into enh/rapidart

* master:
  Fixed afni test
  Fixed AFNI tests.
  Escape the expr parameter in 3dcalc.
  fixing TSNR integer data bug
  ENH: Provide access to all relevant BET outputs when "surfaces" option used.
fix: rapidart tests
fix: fsl version test
Merge branch 'master' into enh/rapidart

* master:
  Removed unnecessary usedefault.
  fixed typo in a file name
  fix: github authentication
  Going back to distinguishing affine transformations by names. Improved docs.
  fixed typo in randomize parameters
  Removed unnecessary copyfiles and added output_image option.
  BF: Pass plugin_args to child nodes of MapNode
  ENH: Don't require ordereddict for python < 2.7
  BF: Fix for plugins when using python2.7
  Fixed parenthesis.
  Fix fslreorient2std output collection
  Allow FNIRT to take standard names as reference.
  BF: Check plugin_args is not None before accessing it like a dict.
fix: afni orientation info
Merge branch 'master' into enh/rapidart

* master:
  fix: fsl tests
  sty: white space
  fix: automask bug when apply_mask is not specified
  fix: updated test writer with additional metadata
  fix: remove unnecessary print statement
  fix: trim http link for code
  fix: github url generation
  fix: return full hash
Merge branch 'master' into enh/rapidart

* master: (127 commits)
  fix: doctest carriage return
  fix: deprecation warning does not reset trait to Undefined - will set new value
  add support for template files
  API fix for somaworkflow
  PEP8
  Further refactoring
  Reafactoring - less redundant code between SGE and PBS.
  Respect custom execution parameters in graph based models.
  Doctest fix, better error reporting.
  fix: config updated before checking for deprecated options
  put back the n_procs docs
  Udated docs with n_procs for MultiProc
  DOC: Added docstring for MpiCommandLine with example usage.
  DOC: Improve docstring for DataFinder, include example usage.
  fix: adding atlases
  fix: removing recommends
  fix: restore fsl
  fix: remove fsl for now
  fix: variable name
  fix: use neurodebian sources
  ...
fix: clean up spm mask generation
fix: reverted mask generation to match matlab art
Merge branch 'master' into enh/rapidart

* master:
  fix: ants workflows setup
  deprecated version should be a string, added AFNITraitedSpec for backward compatibility
  docs
  PEP8
  name_source can be a list, make "infolder" a deprecated name
  Removed unnecessary outputsspecs
  Renaming
  Bugfixes, don't overlad extensions by default.
  fixed AutoTcorrelate and _list_outputs
  added skeleton AutoTcorrelate
  turns out some traits don't have "_metadata"
  fixed hashing
  PEP8
  added prefix/suffix deprecation info
  All autogenerated inputs should not be hashed.
  Refactored AFNI. Added new autogenerating input type.
  Refactor AFNI
  added "tar.gz" as a unusual extension
  graph submission fix
Merge branch 'master' into enh/rapidart

* master: (24 commits)
  Fix #493
  Fixes #459
  fixed doctests
  changelog
  BF: Fixed several issues with GroupAndStack interface
  DOC: Various clean up an improvements to docstrings.
  DOC: Added example to LookupMeta docstring
  ENH: Allow meta_keys input to LookupMeta be a mapping.
  minor fixes
  doc: added version config info to doc
  enh: added output versioning as well
  BF: Wrap imports of optional deps in try-except block
  STY: Cleanup some long lines.
  ENH: Making interface module name dcmstack to match package
  ENH: Allow control of meta data filtering in DcmStack.
  BF: Fixed bug in CopyMeta
  ENH: Default to 'force=True' when reading DICOM files.
  BF: CopyMeta inputspec and outputspec were undefined.
  WIP: Initial interface to dcmstack package.
  sty: pep8
  ...
doc: updated inputs help to indicate FSL and AFNI inaccuracy when using bounds_by_brainmask