Wknml

- Add compatibility for numpy 2

- This is a bug fix release for v1.1.0, fixing the persistence of the taskBoundingBox.

New Features:
- added support for parsing multiple user bounding box tags 45


Breaking Changes:
- the `userBoundingBox` parameter is now called `userBoundingBoxes` to reflect that there can be more than one user bounding box
- e.g. `nml.parameters.userBoundingBoxes`
- the default value is an empty list `[]`
- the new type signature for the attribute is `List[Vector6[int]]`

New Features:
- added support for `<volume id="1" location="data.zip" fallbackLayer="segmentation" />` tags 41
- extended API documentation to cover `wknml.nml_generation` package

Breaking Changes:
- None

New Features:
- added default values for optional attributes
- added unit tests for all constructors

Breaking Changes:
- downgraded `numpy` dependency to version `^1.17.4`

New Features:
- maintenance release
- added matrix tests for Python 3.6-3.9 to CI
- fixed unit tests

Breaking Changes:
- None