lmfit/lmfit-py 1.0.2

Version 1.0.2 officially supports Python 3.9 and has dropped support for Python 3.5. The minimum version of the following dependencies were updated: asteval&gt;=0.9.21, numpy&gt;=1.18, and scipy&gt;=1.3. New features: added two-dimensional Gaussian lineshape and model (PR #642; @mpmdean) all built-in models are now registered in <code>lmfit.models.lmfit_models</code>; new Model class attribute <code>valid_forms</code> (PR #663; @rayosborn) added a SineModel (PR #676; @lneuhaus) add the <code>run_mcmc_kwargs argument</code> to <code>Minimizer.emcee</code> to pass to the <code>emcee.EnsembleSampler.run_mcmc</code> function (PR #694; @rbnvrw) Bug fixes: <code>ModelResult.eval_uncertainty</code> should use provided Parameters (PR #646) center in lognormal model can be negative (Issue #644, PR #645; @YoshieraHuang) restore best-fit values after calculation of covariance matrix (Issue #655, PR #657) add helper-function <code>not_zero</code> to prevent ZeroDivisionError in lineshapes and use in exponential lineshape (Issue #631, PR #664; @s-weigand) save <code>last_internal_values</code> and use to restore internal values if fit is aborted (PR #667) dumping a fit using the <code>lbfgsb</code> method now works, convert bytes to string if needed (Issue #677, PR #678; @leonfoks) fix use of callable Jacobian for scalar methods (PR #681; @mstimberg) preserve float/int types when encoding for JSON (PR #696; @jedzill4) better support for saving/loading of ExpressionModels and assure that <code>init_params</code> and <code>init_fit</code> are set when loading a <code>ModelResult</code> (PR #706) Various: update minimum dependencies (PRs #688, #693) improvements in coding style, docstrings, CI, and test coverage (PRs #647, #649, #650, #653, #654; #685, #668, #689) fix typo in Oscillator (PR #658; @flothesof) add example using SymPy (PR #662) allow better custom pool for emcee() (Issue #666, PR #667) update NIST Strd reference functions and tests (PR #670) make building of documentation cross-platform (PR #673; @s-weigand) relax module name check in <code>test_check_ast_errors</code> for Python 3.9 (Issue #674, PR #675; @mwhudson) fix/update layout of documentation, now uses the sphinx13 theme (PR #687) fixed DeprecationWarnings reported by NumPy v1.2.0 (PR #699) increase value of <code>tiny</code> and check for it in bounded parameters to avoid "parameter not moving from initial value" (Issue #700, PR #701) add <code>max_nfev</code> to <code>basinhopping</code> and <code>brute</code> (now supported everywhere in lmfit) and set to more uniform default values (PR #701) use Azure Pipelines for CI, drop Travis (PRs #696 and #702)