Changelog¶

Version 2.2.9 (2026-10-04)¶

• Fixed UnitDescriptor division (/) losing correct ordering when dividing by a compound unit
  • Dividing by anything built from *// (e.g. velocity / velocity, or force / area) now re-resolves to the correct dimensionality instead of silently picking up the wrong one
• Fixed update_unit_system on named value collections to rescale already-converted values when switching unit systems, instead of only relabeling their unit
  • Switching a model's UnitSystem now correctly re-expresses already-sampled results in the new base units, for both dict and list collections of named values
• Switched API reference generation to Zensical's native api-autonav plugin instead of a hand-maintained generator script

Version 2.2.8 (2026-09-10)¶

• Added changelog
• Fixed bug where Transaction would lose distributions seeded states
  • Now tracks by distribution name instead of by instance
  • Retrying with a freshly constructed distribution on every attempt (as the docs demonstrate) now advances the RNG the same way reusing one instance does, instead of silently drawing unseeded values or getting stuck on a nominal value.

Version 2.2.7 (2026-09-06)¶

• Fixed a security issue with mkdocs-material by auditing existing packages
  • Dependabot alerted to a developer-only dependency that was unused

Version 2.2.6 (2026-09-06)¶

• Cut cold boot time in half by lazy-loading scipy
• Fixed workflow to use SSH key signing since this repo requires it

Version 2.2.5 (2026-08-31)¶

• Added a transaction system to make retrying random draws easier

Version 2.2.4 (2026-08-11)¶

• Fixed many Dependabot issues by bumping versions and removing unneeded packages

Version 2.2.3 (2026-07-03)¶

• Made compound units easier to define with __getitem__ so you can write:

  Python
  1 2	US = stochas.UnitSystem.si() velocity = 4 * US["ft/s"]

• Fixed registering new units with UnitSystem

Version 2.2.2 (2026-07-03)¶

• Sampled units now come with their actual unit instead of None

Version 2.2.0 (2026-07-01)¶

• Added UnitSystem
  • Allows you to multiply a value by a unit and easily express that value in a declared unit system
  • Helpful for converting from IPS to SI
  • Collections, distributions, and named values now track their units using a more formal system
• Added an example to the docs on how to use UnitSystem

Version 2.1.8 (2026-06-29)¶

• Sampled named values now inherit metadata from distributions when sampled

Version 2.1.7 (2026-06-29)¶

• Added metadata mixin, which adds metadata fields to parameters
• Removed StochasBase.with_override() since it was a duplicate of StochasBase.with_overrides()

Version 2.1.6 (2026-06-20)¶

• Added reset_rng argument to sample_dist since with_seed and with_trial_num always reset RNG
• Broke up Distribution into Continuous and Discrete

Version 2.1.5 (2026-06-16)¶

• Added support for a bunch of new distributions
• Fixed a Windows bug where newlines were added to the inputs table

Version 2.1.4 (2026-06-15)¶

• Fixed serialization of distributions

Version 2.1.2 (2026-06-15)¶

• Added new metadata fields for categorizing and declaring the units of a distribution
• Added the AnyDist.to_tables() method to easily record a distribution to a table
  • Tables are broken up by distribution type and category

Version 2.1.1 (2026-06-14)¶

• Expanded unit tests
• Changed docs site to zensical instead of mkdocs

Version 2.1.0 (2026-06-13)¶

• Added Rayleigh distribution
• Added validation for design variables

Version 2.0.4 (2026-05-27)¶

• Fixed the sample_dist bug where repeated calls would crash the code rather than return the existing distribution

Version 2.0.3 (2026-05-06)¶

• Fixes for multiprocessing

Version 2.0.2 (2026-05-01)¶

• Documentation page improvements

Version 2.0.1 (2026-04-24)¶

• Updated site CSS and logo

Version 2.0.0 (2026-04-20)¶

• Added design variable system for mujoco-mojo. Expanded this system to support:
  • Boolean suggestors
  • pymoo suggestions
  • Value refinement when rerunning a study
• Expanded documentation

Version 1.0.4 (2026-04-18)¶

• Fixes to named value serialization with generic types
• Switched to using a sentinel value instead of overloading NamedValueState

Version 1.0.3 (2026-04-17)¶

• Added support for Python 3.14

Version 1.0.2 (2026-04-04)¶

• Updated branding
• CI/CD fixes and improvements

Version 1.0.0 (2026-04-03)¶

• Initial release of stochas (based on work by Talbot Knighton)
  • Full rewrite of process_manager, renamed to stochas
• Changed license
• Updated README and documentation site
• Added distributions to public API
• NamedValue objects now work like numerical values via NumericMixin