Merge pull request #1508 from pints-team/1502-xtol-ftol

Allowing xtol and ftol stopping criteria in OptimisationController

Author: MichaelClerx

CHANGELOG.md

@@ -8,9 +8,11 @@ All notable changes to this project will be documented in this file.
 ### Added
 - [#1716](https://github.com/pints-team/pints/pull/1716) PINTS is now tested on Python 3.14.
 - [#1715](https://github.com/pints-team/pints/pull/1715) Added methods `ProblemErrorMeasure.problem()`, `ProblemLogLikelihood.problem()`, `SingleOutputProblem.model()` and `MultiOutputProblem.model()`.
+- [#1508](https://github.com/pints-team/pints/pull/1508) Added a method `OptimisationController.set_parameter_tolerance` that allows methods to stop after a fixed number of iterations with no significant movement in parameter space.
 ### Changed
 - [#1713](https://github.com/pints-team/pints/pull/1713) PINTS now requires matplotlib 2.2 or newer.
 ### Deprecated
+- [#1508](https://github.com/pints-team/pints/pull/1508) The methods `OptimisationController.max_unchanged_iterations` and `set_max_unchanged_iterations` are deprecated, in favour of `function_tolerance` and `set_function_tolerance` respectively.
 ### Removed
 ### Fixed
 - [#1713](https://github.com/pints-team/pints/pull/1713) Fixed Numpy 2.4.1 compatibility issues.