PySDM

• handling of domain-leaving particles in displacement logic and 1D kinematic smoke tests updates (thanks to @sajjadazimi)
• more tests for CCN activation (thanks to @claresinger)
• code cleanups (including enforcing keyword parameters for functions with many args)

• common aerosol composition code in PySDM.initialisation (@claresinger)
• breakup: counting breakup deficit instead of reporting error, vmin and nfmax thresholds (@edejong-caltech)
• Area attribute and SimpleGeometric collision kernel (@edejong-caltech)
• NumberSizeSpectrum and BreakupRateDeficitPerGridbox products (@edejong-caltech)
• adaptive time-stepping in Displacement dynamic (criterion suggested by @mwest1066)
• Feingold1988Frag fragmentation function (@edejong-caltech)
• renaming default branch from master to main

• new example reproducing CCN activation figures from Abdul-Razzak & Ghan 2000 (kudos to @imdula, @claresinger & @trontrytel!)

• add black, isort and precommithooks code maintenance helpers (kudos @jb-mackay!)

• fix in collision dynamics ctors solving problem with undefined random seed on the GPU backend (thanks @s-shima for reporting it)
• cleanups and new smoke tests for CCN activation representation (thanks @claresinger)
• CI: add job cancellation workflow for GitHub Actions (thanks @claresinger)

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

• updates in Lowe et al. 2019 example (thanks @claresinger)
• ambient relative humidity wrt ice (as option to the existing AmbientRelativeHumidity product)

• new example: parcel simulation based on a setup from Pyrcel documentation (kudos @claresinger)
• adding dry option to ParticleVolumeVersusRadiusLogarithmSpectrum product
• arbitrary-moment product factory
• nbviewer badges in README.md
• cleanups

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)

• 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

• 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

• 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

• 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

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

• 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

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

• 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)

• more options around freezing spectrum (incl. Bigg 1953 formulation)
• cleanups, better error messages in initialisation
• smarter setitem support for Box environment

• new attribute: CriticalSupersaturation
• new product: ActivableFraction
• cleanups

• bumping ThrustRTC requirement to 0.3.15 (in which support for GPU/CUDA hardware/software current Colab setup is fixed)