New Updated SimpleITK to v0.10.0. Better support for using SimpleElastix in other projects. SimpleElastix and SimpleTransformix facade classes were refactored according to the private implementation (pimpl) pattern. This means all elastix headers are compiled into the compilation unit and does not have to be installed on the target system. The result is a more robust build and faster compilation and linking process. SimpleElastix and SimpleTransformix are only compiled for the float pixel type by default. Images are automatically casted back and forth internally. This significantly improves build times and reduces binary size. Elastix was updated to the newest version which includes many improvements and bugfixes; in particular a huge merge of the performance branch. Changed SimpleTransformix.SetMovingPointSet() changed name to SimpleTransformix.SetFixedPointSet() to accurately reflect its mathematical definition.