6.6.0

Features

• Added :meth:multidict.MultiDict.merge which copies all items from arguments if its key
  not exist in the dictionary -- by :user:asvetlov.

  Related issues and pull requests on GitHub:
  #292.

• Stopped reallocating memory for the internal htkeys_t structure when inserting new items if the
  multidict has deleted items and it could be collapsed in-place. Removal of
  malloc()/free() improves the performance slightly.

  The change affects C implementation only, pure Python code is not changed.

  Patch by :user:asvetlov.

  Related issues and pull requests on GitHub:
  #1200.

• C implementation of :class:multidict.MultiDict.getall now is slightly faster if it returns nothing -- by :user:asvetlov.

  Related issues and pull requests on GitHub:
  #1212.

Improved documentation

• Replaced docstring for :meth:multidict.MultiDict.update to don't use RST/markdown markup.

  Related issues and pull requests on GitHub:
  #1203.

• Improved documentation for :meth:multidict.MultiDict.extend and :meth:multidict.MultiDict.update -- by :user:asvetlov.

  Related issues and pull requests on GitHub:
  #1205.

Contributor-facing changes

• When building wheels, the source distribution is now passed directly
  to the cibuildwheel invocation -- by :user:webknjaz.

  Related issues and pull requests on GitHub:
  #1199.

• Set up PYTHONHASHSEED for benchmarks execution to make measured times stable -- by :user:asvetlov.

  Related issues and pull requests on GitHub:
  #1202.

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