0.2.1
 - fix: regression when loading data from zip file
0.2.0
 - drop support for Python 3.5
 - fix: SeriesHdf5Qpimage blocked hdf5 file for reading
 - fix: background datasets did not get hologram keyword arguments
 - feat: allow to cast input data type (qpimage version 0.2.0)
0.1.6
 - code cleanup
0.1.5
 - fix: raw phasics tif files were not ignored in `SeriesFolder` (#3)
 - feat: reduce length of dataset hashes to six chars for user convenience
 - feat: switch order of name and index in identifier for user convenience
0.1.4
 - feat: new file format for zipped hologram tif files
 - feat: add "storage_type" property describing which type of data
   is stored originally in a dataset
 - feat: add hologram file formats: HyperSpy and tif-based 
 - fix: use hologram keyword arguments to generate dataset identifer
0.1.3
 - feat: save memory by hard-linking background image data in QPSeries
 - fix: format series and single hdf5: override raw meta data
 - fix: include background data in determination of data set identifiers
0.1.2
 - feat: change API for SingleData ("idx=0" for user convenience)
 - feat: implement SeriesData.saveh5 (export as qpimage.QPSeries) (#2)
 - feat: add unique part of file name to SeriesFolder image identifiers (#2)
 - feat: extract identifiers from hdf5 files
0.1.1
 - feat: support pathlib
 - feat: add SeriesData.identifier
0.1.0
 - initial release
