Add dask array support

Add make_bdv_from_dask_array for dask array support by @boazmohar

Better on the fly support

Better support for on the fly processing:

• adds initialize_bdv function to create an empty bdv dataset

Add functionality for reading and writing setup names

0.5.1

Bump version

Add bdv dataset

• Add bdv dataset to write to all scale levels of a file in bdv format from python; implemented by @jhennies
• Fix issues in downscaling methods
• Work on support for zarr (not working yet due to zarr-developers/zarr-python#693)

Custom attributes and over-write functionality

0.4.2

Bump version

Add utility functions

Utility functions to read resolution, file type and scale factors from bdv files.

Support n5 bdv format

• Support conversion to n5 bdv format
• Implement multi-threaded copying and downscaling

Fix dtype issues

Convert interger dtypes to be compatible with BDV.
Dtype conversion can be disabled by passing convert_dtype=False to make_bdv / convert_to_bdv.

Fix CLI

Fix CLI:

• move pybdv_converter from root to pydv/scripts
• install it in setup.py

Fix issue in determination of shapes for downscaling.

Infer correct set-up id

Infer correct next set-up id when passed default value.