Merge topic 'SIMPLEITK-429_AddOptionalInputs'

51f661e9 Adding casting to itkImages for Image inputs types
47732c7f Fix copied hash for new mask image filter test
6fdb963f Fix passing inputs to ExecuteInternal method as pointers
0cfafb34 Merge branch 'SIMPLEITK-550_AddTransformToDisplacementField' into SIMPLEITK-429_AddOptionalInputs
ff462fa7 Adding changes needed to merge into optional inputs branch
610f5a28 Fix missing InputImageType2 template parameter
fc31fa57 Add auto-crop option to LabelMapMask filter
53b068bc Use named input for dual dispatch filters
3b7f4913 Adding support for inputs list to Dual dispatch filter template
5400abb1 Use stronger enum type for pixel id in core template component
607c23ee Adding Mask as optional input to auto threshold filters.
f48d2756 Adding a 255 mask for cthead for test data input
15abd849 Update test for multiple inputs
882a376d Adding generation of procedural methods with optional inputs
e019bb55 Add support for inputs dispatches image to be any name
26659161 ENH: Add Generation of additional Execute methods with optional inputs
...
Merge topic 'AddCenteredTransformInitializer'

bb149006 copy input to CenteredTransformInitializer
fd84ca70 Fixing name of Moments and removing leading white space
0022e21d Adding test for centered transform initializer
66598723 Adding generated CenteredTransformInitialization filter
11250c63 Modifying the generated code for the CenterTransformInitializer
7dbf56f9 Renaming CenterTransfromInitializer with filter suffix
c8e00283 Adding generated code from the json expand system
dec46592 Adding json to generate initial code for CenteredTransformInitializer
Merge topic 'ITKDoxygenTags'

5fe23591 Improving style and comment messages
227dabb4 Removed unneeded files, added option
Merge topic 'SIMPLEITK-541_AddInitialDisplacementFieldToDemons'

77df661c Adding testing of demons registrations filters w initial displacement
afe731b8 Adding DemonsRegistration2 for c++ example
f5f76cf1 Adding python example with initial transform
f06179a3 Rename deformable registration to demons exmaple
e256e6f7 Adding inputs to demons with optional InitalDisplacementField
Merge branch 'master' into next