Started building the framework to enable the use of different coding schemes in the group analysis model builder.
Assorted GUI fixes and improvements; resolution of several Github issues.
Changed some GUI defaults.
Updated the cpac_run.py script.
Enabled the ability to use selected functional timeseries volumes as the input for functional-to-anatomical registration, as an option. New branch.
Fixed a couple of errors.
Fixed a few more things.
Bug fix for Github issue #303 and cleaned up some formatting
Added unit test for centrality, formatted changes in setup.py and cleaned up network_centrality/utils.py
Cleaned some code up
Some changes in skullstripping code and GPA.
Fixed anatomical registration with skull on: it now uses the brain-only input and reference for the linear part of registration like it should.
Fully implemented Treatment coding in the group analysis model builder, at least for most standard models; some expansion may be necessary for when people want to get really creative.
Started changes to output SCA correlations as 4D files.
Merge branch '0.3.8_development' into 0.3.7_func-t1_mod

Conflicts:
	CPAC/__init__.py
Merge branch '0.3.7_func-t1_mod' into 0.3.8_development
Major fixes for bugs in dual regression and SCA warp applications to standard space.
Started the process of streamlining the QA interface generation code.
Merge pull request #402 from dclark87/master

Pull in dclark87's changes to 0.3.8 development.
Fixed the warp application transform ordering after certain registration issues, and also removed an unnecessary print statement.