update changelog

Author: sbillinge

CHANGELOG.rst

@@ -1,5 +1,60 @@
 =============
-Release notes
+Release n
+0.2.0
+=====
+
+**Added:**
+
+* Coverage report in each PR
+* Implement tests for ``compute_objective_function()``
+* Add spelling check pre-commit via Codespell
+* Added XRD example using real data
+* SNMFOptimizer.converged_ attribute to indicate whether the optimization
+successfully reached the convergence tolerance (True) or stopped because the
+maximum number of iterations was reached (False).
+* L-BFGS-B method in scipy for weight optimization in def get_weights
+* Support for Python 3.13
+* 'SNMFOptimizer.objective_log' attr: dictionary list to track the optimization
+process, recording the step, iteration, objective, and timestamp at each update.
+Uses the 'step', 'iteration', 'objective' and 'timestamp' keys.
+* 'SNMFOptimizer(verbose : Optional[bool])' option and SNMFOptimizer.verbose
+attribute to allow users to toggle diagnostic console output.
+* Add docformatter config block to the end of the pyproject.toml file.
+
+**Changed:**
+
+* Refactor ``get_objective_function()`` into a static method and getter
+* Move project/package naming and related references to the new ``diffpy.stretched-nmf`` name.
+* Update to scikit-package 0.3
+* Modified all print messages for improved readability and tied them to the new
+verbose flag.
+* Refactored convergence checks and step-size calculations to pull objective
+values directly from objective_log instead of relying on a separate history
+array.
+
+**Fixed:**
+
+* Add getting started section and re-arrange install success check instructions
+* Support ``scikit-package`` Level 5 standard (https://scikit-package.github.io/scikit-package/).
+* Remove extraneous files
+* Register ``pytest.mark.slow`` in pytest config to avoid unknown-marker warnings.
+* Add entry point to the application
+* Fix CLI bug due to typo
+* Reformat README for PyPi compatibility
+* Consistently label variables as private or fit-derived
+* Absolute tolerance for updated weighted matrix from 0.5 to 1e-05 in test_subroutines.py
+* Include GitHub Issues templates for bug report and feature request
+* Conform variable names to PEP-8
+
+**Removed:**
+
+* Old tests and source files from prior, pre-release development.
+* cvxpy dependency for linear weight optimization in def get_weights
+* Support for Python 3.10
+* Removed the 'SNMFOptimizer._objective_history' list, which was made redundant
+by the comprehensive 'SNMFOptimizer.objective_log' tracking system.
+
+otes
 =============
 
 0.1.3