docstring and param checking for loadSeries
docstring and param checking for loadImages
make conf.json file name configurable via keywork arg
move FORMATS lookup into data module
fixes for circular import, should mirror upstream changes
temp: copy Parser into series module to avoid circular import
initial working test for series binary loader
remove unused import
merge from upstream
minor refactoring in SeriesLoader test
Merge pull request #23 from industrial-sloth/custom-rdds

Custom rdds