lmfit/lmfit-py 0.9.15

Version 0.9.15 is the last release that supports Python 2.7; it now also fully suports Python 3.8.

New features, improvements, and bug fixes:

• move application of parameter bounds to setter instead of getter (PR #587)
• add support for non-array Jacobian types in least_squares (Issue #588, @ezwelty in PR #589)
• add more information (i.e., acor and acceptance_fraction) about emcee fit (@j-zimmermann in PR #593)
• "name" is now a required positional argument for Parameter class, update the magic methods (PR #595)
• fix nvars count and bound handling in confidence interval calculations (Issue #597, PR #598)
• support Python 3.8; requires asteval >= 0.9.16 (PR #599)
• only support emcee version 3 (i.e., no PTSampler anymore) (PR #600)
• fix and refactor prob_func in confidence interval calculations (PR #604)
• fix adding Parameters with custom user-defined symbols (Issue #607, PR #608; thanks to @gbouvignies for the report)

Various:

• bump requirements to LTS version of SciPy/ NumPy and code clean-up (PR #591)
• documentation updates (PR #596, and others)
• improve test coverage and Travis CI updates (PR #595, and others)
• update pre-commit hooks and configuration in setup.cfg

To-be deprecated:

• function Parameter.isParameter and conversion from uncertainties.core.Variable to value in _getval (PR #595)