- Update to version 1.0.1
  + New features:
    - added thermal distribution model and lineshape (PR #620; @mpmdean)
    - introduced a new argument ``max_nfev`` to uniformly specify the maximum
      number of function evalutions (PR #610)
      **Please note: all other arguments (e.g., ``maxfev``, ``maxiter``, ...)
      will no longer be passed to the underlying solver. A warning will be emitted
      stating that one should use ``max_nfev``.**
    - the attribute ``call_kws`` was added to the ``MinimizerResult`` class and
      contains the keyword arguments that are supplied to the solver in SciPy.
  + Bug fixes:
    - fixes to the ``load`` and ``__setstate__`` methods of the Parameter class
    - fixed failure of ModelResult.dump() due to missing attributes
      (Issue #611, PR #623; @mpmdean)
    - ``guess_from_peak`` function now also works correctly with decreasing
       x-values or when using pandas (PRs #627 and #629; @mpmdean)
    - the ``Parameter.set()`` method now correctly first updates the boundaries
      and then the value (Issue #636, PR #637; @arunpersaud)
  + Various:
    - fixed typo for the use of expressions in the documentation
      (Issue #610; @jkrogager)
    - removal of PY2-compatibility and unused code and improved test
      coverage (PRs #619, #631, and #633)
    - removed deprecated ``isParameter`` function and automatic conversion of
      an ``uncertainties`` object (PR #626)
    - inaccurate FWHM calculations were removed from built-in models, others
      labeled as estimates (Issue #616 and PR #630)
    - corrected spelling mistake for the Doniach lineshape and model
      (Issue #634; @rayosborn)
    - removed unsupported/untested code for IPython notebooks in lmfit/ui/*

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