neuron_volumina_viewer: Changed to an executable.
HDF5_serializers: Renamed all parameters referring to file handles.
HDF5_recorder: Renamed parameters for EmptyArrayRecorder and HDF5ArrayRecorder to have names consistent with dict methods.
HDF5_recorder: Changed __getitem__ methods of EmptyArrayRecorder and HDF5ArrayRecorder to raise a KeyError if the key given is not found.
HDF5_recorder: Added the get method to EmptyArrayRecorder and HDF5ArrayRecorder so that retrieval can be performed without raising an exception.
batch_learner: Renamed to nanshe_learner.
neuron_volumina_viewer: Renamed to nanshe_viewer.

nanshe_learner: Renamed from batch_learner.
nanshe_viewer: Renamed from neuron_volumina_viewer.

__init__: Renamed batch_learner to nanshe_learner and neuron_volumina_viewer to nanshe_viewer.
nanshe_learner: Dropped the extra step of finding HDF5 details.
nanshe_learner: Changed generate_neurons so that it takes original_images as a parameter instead of reading if from the resume_logger.
nanshe_learner: Cleaned up stages in generate_neurons so that verification and retrieval occur once.
nanshe_learner: Cleaned up imports.
nanshe_learner: Cleaned up so that the input and output files are separate. Also, dropped support for batch processing input files in nanshe_learner as it is limited by not being parallelized. This fixes #38.
advanced_image_processing: Combined the bias step of preprocess_data with extract_f0 as the purpose of the bias is to avoid divide by zero errors.
advanced_image_processing: Added default value for bias in extract_f0. It is ensured that the smallest value in new_data will be 1.
pathHelpers: Deleted as it is included in lazyflow.utility and that is being packaged with the code anyways.
__init__: Removed import of pathHelpers.
nanshe_learner: Changed usages of pathHelpers to lazyflow.utility.pathHelpers.
tiff_file_format: Changed usages of pathHelpers to lazyflow.utility.pathHelpers.