PySDM v2.0

tada:

• Monte-Carlo super-particle-number-conserving collisional breakup representation
  (original algorithm and implementation by @edejong-caltech and @jb-mackay)

misc:

• Lowe et al. 2019 (Pruppacher & Klett) diffusion kinetics/thermics & latent heat formula (thanks @claresinger)
• Lowe 1977 saturation vapour pressure formulae (thanks @claresinger)
• Murphy and Koop 2005 saturation vapour pressure formulae (thanks @isilber)
• new product: FlowVelocityComponent
• new spectra: Gamma & Gaussian (thanks @edejong-caltech)
• fixing race condition in coalescence counter increments (thanks @jb-mackay)
• fixing non-rectangular domain handling in VTK exporter
• switch from SciPy to PySDM backend root-solver in CompressedFilmRuehl surface tension (thanks @claresinger)
• swithing to use single buffer for all products (less memory allocated)
• better unit-test coverage for physics formulae incl. units (thanks @claresinger)

PySDM v1.27

• moving terminal velocity and coalescence kernels out of "physics"
  (re-release to trigger DOI generation after enabling integration with Zenodo)

PySDM v1.26

• new Szyszkowski-Langmuir surface tension model (and updates in Ruehl model) - kudos @claresinger!
• JOSS paper branch merged into main one, added CI workflow to check the paper code
• new cooling rate attribute and product
• new max Courant number product
• VTK exporter fixes
• mass and heat accommodation coefficients alterable from within constants
• cleanups

PySDM v1.25

• major refactor around physical constants handling (Formulae ctor now accepts a dictionary of constant values to use instead of the defaults)
• handling exdown -> pytest-codeblocks package name change in GA workflow files
• first smoke test for immersion freezing using 2d kinematic setup (both singular and time-dependent)
• binned terminal velocity product and a corresponding 2d kinematic GUI panel
• mixed-phase support at Moist environment base class level
• handling of non-spatial dimensions (e.g. histogram bins) in netCDF exporter
• cleanups

PySDM v1.24

• module docstring coverage reached 100% (checked with pylint in CI)
• using python -We -m pdoc instead of pdoc to catch broken code links within docstring (and other issues)
• catching OSError when importing ThrustRTC and issuing a warning (pdoc parsing works then even on machines without CUDA)
• some minor code cleanups/refactors

PySDM v1.23

• fixes and refactors around unit handling in the common code of the products subsystem (incl. new RateProduct base class)
• numerous GPU code fixes (kudos to @Delcior for reporting it)
• FakeThrust API updates to match ThrustRTC 0.3.17

PySDM v1.22

• initialisation and spectra refactors
• formulae.py moved out of physics to avoid cyclic imports

PySDM v1.21

• product subsystem refactor (incl. enforced SI units as defaults, pint handling of user-supplied unit conversion, shorter code, clearer directory structure, more common code, improved test coverage)
• cleanups

PySDM v1.20

• code cleanups & refactors
• making pylint warnings fail GA workflow
• phasing out PrecisionResolver - precision is now an init parameter of the GPU backend class

PySDM v1.19

• VTK product export (kudos @abulenok)
• new surface tension model draft added, relabelling existing models (kudos @claresinger)
• cleanups (incl. graphics files linked from README - now showing files generated through GitHub Actions on a latest merge)