Pysdm

What's Changed
* isotopes: add Gonfiantini 1986 example with fig. 3-1 reproduction (Rayleigh distillation for different RH for 2H and 18O + GMWL) by AgnieszkaZaba in https://github.com/open-atmos/PySDM/pull/1521


**Full Changelog**: https://github.com/open-atmos/PySDM/compare/v2.103...v2.104

What's Changed
* Bump setuptools-scm from 8.1.0 to 8.2.0 in /examples by dependabot in https://github.com/open-atmos/PySDM/pull/1517
* Bump setuptools from 75.8.0 to 75.8.1 in /examples by dependabot in https://github.com/open-atmos/PySDM/pull/1518
* new example: Toon et al. 1980 (hello-world for using PySDM for extraterrestrial clouds, here for Titan); variable-g/constant-T hydrostatics formulae by aleksandratal in https://github.com/open-atmos/PySDM/pull/142

New Contributors
* aleksandratal made their first contribution in https://github.com/open-atmos/PySDM/pull/142

**Full Changelog**: https://github.com/open-atmos/PySDM/compare/v2.102...v2.103

What's Changed
* new tests for mixed-phase moments, signed-water-mass attribute, `radius_to_mass()` for mixed phased spheres by tluettm in https://github.com/open-atmos/PySDM/pull/1513

New Contributors
* tluettm made their first contribution in https://github.com/open-atmos/PySDM/pull/1513

**Full Changelog**: https://github.com/open-atmos/PySDM/compare/v2.101...v2.102

What's Changed
* refactor freezing code moving Poissonian void probability formula to Trivia; support for docstrings in Formulae._c_inline() by slayoo in https://github.com/open-atmos/PySDM/pull/1511
* clarify dimensionality checks for dimensionless units (thanks AgnieszkaZaba for hint) by slayoo in https://github.com/open-atmos/PySDM/pull/1512


**Full Changelog**: https://github.com/open-atmos/PySDM/compare/v2.100...v2.101

What's Changed
* docstrings formatting changes stemming from precommit selfupdate by slayoo in https://github.com/open-atmos/PySDM/pull/1510
* removal of time-tracking in parcel env. code (in favour of using Particulator's step counter); removal of unneeded fields: formulae and params by slayoo in https://github.com/open-atmos/PySDM/pull/1509


**Full Changelog**: https://github.com/open-atmos/PySDM/compare/v2.99...v2.100

What's Changed
* constants defaults: more docstrings and literature references, proper docstring placement (closes 1448), bib-script enhancements by slayoo in https://github.com/open-atmos/PySDM/pull/1485

thanks AgnieszkaZaba for help

**Full Changelog**: https://github.com/open-atmos/PySDM/compare/v2.98...v2.99