additional_generators: Added doctests to reformat_slices and len_slices. This closes #57 and closes #58.
HDF5_serializers: Removed file handle portion as this does not work and sometimes closes the wrong file.
HDF5_serializers: Fixed so that it can now read single numbers from HDF5 Datasets.
neuron_volumina_viewer: Created a mechanism that provides an operator for max projection onto a source. Added MaxProjectionConstantSource and MaxProjectionConstantRequest for dealing with determing the max projection of a constant source (will not change or become dirty) along one dimension.