Pninexus

- technical release for libpninexus v3.0.3 ([196](https://github.com/pni-libraries/libpninexus/issues/196)) and libh5cpp v0.5.2 (https://github.com/ess-dmsc/h5cpp/issues/616)

- technical release for libpninexus v3.0.2 ([196](https://github.com/pni-libraries/libpninexus/issues/196)) and libh5cpp v0.5.2 (https://github.com/ess-dmsc/h5cpp/issues/616)

- technical release for libpninexus v3.0.1 ([189](https://github.com/pni-libraries/libpninexus/issues/189)) and libh5cpp v0.5.1 (https://github.com/ess-dmsc/h5cpp/issues/602)

- add documetation versioning ([148](https://github.com/pni-libraries/python-pninexus/pull/148))
- switch tests to pytest ([149](https://github.com/pni-libraries/python-pninexus/pull/149))
- add size, type and dimensions to Hyperslab ([154](https://github.com/pni-libraries/python-pninexus/pull/154))
- update enums for SZip and ScaleOffset updated ([157](https://github.com/pni-libraries/python-pninexus/pull/157))
- add PointsWrapper ([160](https://github.com/pni-libraries/python-pninexus/pull/160))
- add H5CPP_ prefix ([162](https://github.com/pni-libraries/python-pninexus/pull/162))
- use libpninexus 3.0.0 and libph5cpp 0.5.0 c++ libraries ([166](https://github.com/pni-libraries/python-pninexus/pull/166))

- use libpninexus 2.0.0 c++ libraries ([143](https://github.com/pni-libraries/python-pninexus/pull/143))

- HDF5_version to HDF5_Version attribute changed ([132](https://github.com/pni-libraries/python-pninexus/pull/132))
- NeXus_version attribute removed ([132](https://github.com/pni-libraries/python-pninexus/pull/132))
- h5cpp.current_library_version() function added ([132](https://github.com/pni-libraries/python-pninexus/pull/132))