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Commit 64a7bd5

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tacaswelltacaswell
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Merge pull request #9095 from tacaswell/doc_api_whatsnew_mergeup
DOC: merge new whats_new and api_changes into top level doc
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‎doc/api/api_changes.rst

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API Changes in 2.1.0
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====================
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cbook deprecations
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------------------
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Many unused or near-unused cbook functions and classes have been deprecated:
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``converter``, ``tostr``, ``todatetime``, ``todate``, ``tofloat``, ``toint``,
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``unique``, ``is_string_like``, ``is_sequence_of_strings``, ``is_scalar``,
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``Sorter``, ``Xlator``, ``soundex``, ``Null``, ``dict_delall``, ``RingBuffer``,
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``get_split_ind``, ``wrap``, ``get_recursive_filelist``, ``pieces``,
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``exception_to_str``, ``allequal``, ``alltrue``, ``onetrue``, ``allpairs``,
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``finddir``, ``reverse_dict``, ``restrict_dict``, ``issubclass_safe``,
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``recursive_remove``, ``unmasked_index_ranges``.
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Improved Delaunay triangulations with large offsets
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---------------------------------------------------
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Delaunay triangulations now deal with large x,y offsets in a better
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way. This can cause minor changes to any triangulations calculated
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using Matplotlib, i.e. any use of `matplotlib.tri.Triangulation` that
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requests that a Delaunay triangulation is calculated, which includes
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`matplotlib.pyplot.tricontour`, `matplotlib.pyplot.tricontourf`,
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`matplotlib.pyplot.tripcolor`, `matplotlib.pyplot.triplot`,
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`mlab.griddata` and `mpl_toolkits.mplot3d.plot_trisurf`.
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Deprecation in EngFormatter
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---------------------------
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Passing a string as *num* argument when calling an instance of
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`matplotlib.ticker.EngFormatter` is deprecated and will be removed in 2.3.
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:meth:`matpltolib.cbook.CallbackRegistry.process` suppresses exceptions by default
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----------------------------------------------------------------------------------
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Matplotlib uses instances of :obj:`~matplotlib.cbook.CallbackRegistry`
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as a bridge between user input event from the GUI and user callbacks.
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Previously, any exceptions raised in a user call back would bubble out
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of of the ``process`` method, which is typically in the GUI event
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loop. Most GUI frameworks simple print the traceback to the screen
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and continue as there is not always a clear method of getting the
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exception back to the user. However PyQt5 now exits the process when
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it receives and un-handled python exception in the event loop. Thus,
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:meth:`~matplotlib.cbook.CallbackRegistry.process` now suppresses and
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prints tracebacks to stderr by default.
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What :meth:`~matplotlib.cbook.CallbackRegistry.process` does with exceptions
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is now user configurable via the ``exception_handler`` attribute and kwarg. To
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restore the previous behavior pass ``None`` ::
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cb = CallbackRegistry(exception_handler=None)
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A function which take and ``Exception`` as its only argument may also be passed ::
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def maybe_reraise(exc):
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if isinstance(exc, RuntimeError):
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pass
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else:
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raise exc
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cb = CallbackRegistry(exception_handler=maybe_reraise)
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`mpl_toolkits.axes_grid` has been deprecated
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--------------------------------------------
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‎doc/api/api_changes/2017-05-22-cbook-deprecations.rst

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‎doc/api/api_changes/2017-07-14-IT_qhull_large_offset.rst

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‎doc/api/api_changes/2017-08-24-deprecation-in-engformatter.rst

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‎doc/api/api_changes/2017-08_TAC.rst

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‎doc/users/whats_new.rst

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contour.negative_linestyle : dashdot # previously only solid or dashed
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New keyword argument 'sep' for EngFormatter
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-------------------------------------------
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A new "sep" keyword argument has been added to
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:class:`~matplotlib.ticker.EngFormatter` and provides a means to define
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the string that will be used between the value and its unit. The default
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string is " ", which preserves the former behavior. Besides, the separator is
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now present between the value and its unit even in the absence of SI prefix.
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There was formerly a bug that was causing strings like "3.14V" to be returned
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instead of the expected "3.14 V" (with the default behavior).
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Previous Whats New
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==================

‎doc/users/whats_new/EngFormatter_new_kwarg_sep.rst

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