Prospector

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It's a bugs life.

**Fixes**:

* Fixed a problem where pylint was reporting the same message multiple times, because it was given a path to the file multiple times
* The blending fix mentioned in the 1.7.5 release was actually not checked in by accident, this is there now.

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Just say no to bugs.

**New**:

* Profile inheritance is now optional - appending a profile name with a ``?`` means that if it is not found, prospector will simply continue. `Read the documentation here <https://prospector.landscape.io/en/master/profiles.html#inheritance>`_. Closes `161 <https://github.com/PyCQA/prospector/issues/161>`_

**Fixes**:

* Stopped the ProfileValidator tool raising errors about ``pep8`` and ``pep257`` sections being unknown. Instead, they raise deprecated warnings.
* Blending works again - for example, pylint and pycodestyle errors representing the same thing are combined. After renaming pep8 to pycodestyle, this only worked when using legacy names.
* Unrecognised Mypy options now raise an exception instead of silently carrying on - `455 <https://github.com/PyCQA/prospector/issues/455>`_

**Tidyup**:

* Lots of warnings fixed from running prospector on itself

-------------

Mea culpa release

**Fix**

The effort to allow pylint configuration in ``pyproject.toml`` to be used as an external config source (`issue here <https://github.com/PyCQA/prospector/issues/485>`_) had the unintended side effect where any project using poetry would now use that configuration and thus would ignore the pylint configuration in the profile. This was true even if the ``pyproject.toml`` had no pylint directives in it.

The behaviour has now been fixed where pylint will be configured using configuration from the profile *first* and then if any additional settings are found in a ``pylintrc`` or ``pyproject.toml`` or ``setup.cfg`` then these will override the profile configuration, instead of replacing it entirely.

This also has the benefit of fixing `227 <https://github.com/PyCQA/prospector/issues/227>`_.

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The war on bugs.

**Fixes**:

* Autodetect now does not die if a user does not have permissions (related to `271 <https://github.com/PyCQA/prospector/issues/271>`_ and `#487 <https://github.com/PyCQA/prospector/issues/487>`_)
* Fixed that some pylint documentation warning messages were not correctly included in the list of documentation warnings to squash if doc warnings are not desired.
* Fixed the exit code for prospector - it was always ``0`` after the move to using poetry for packaging instead of ``1`` if errors were found (unless ``--zero-exit``) was used. This now exits with the correct code based on the documented (and previous) behaviour.
* Fix that ``pep8`` would overwrite instead of inherit from previous ``pycodestyle`` blocks, same with pep257 - `491 (comment) <https://github.com/PyCQA/prospector/issues/491#issuecomment-1053539711>`_
* Fix the pre-commit hook, as it could not run without being installed ``[with_everything]``, due to the "NotAvailableTool" class not properly implementing the abstract base class.
* Improved documentation about the pre-commit hook as well to clarify its use better - `484 <https://github.com/PyCQA/prospector/issues/484>`_

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More bugfixes!

**Fixes**:

* Fix that ``pep8`` and ``pep257`` sections were renamed but the old deprecated values were not properly used to configure ``pycodestyle`` and ``pydocstyle`` - `491 <https://github.com/PyCQA/prospector/issues/491>`_
* Better handling for when the user running prospector is not able to read a file or directory - `271 <https://github.com/PyCQA/prospector/issues/271>`_ and `#487 <https://github.com/PyCQA/prospector/issues/487>`_

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Lots of smaller bugfixes.

**Fixes**:

* Prospector now configures pylint using settings found in ``pyproject.toml`` or ``setup.cfg``, not only ``.pylintrc`` - `485 <https://github.com/PyCQA/prospector/issues/485>`_
* Fixed ``--no-style-warnings`` command line argument no longer warning after renaming ``pep8`` to ``pycodestyle`` - `488 <https://github.com/PyCQA/prospector/issues/488>`_
* Documentation is building again - `473 <https://github.com/PyCQA/prospector/issues/473>`_
* ``--with-tool`` flag now respects - but overrides - tools disabled in profiles - `447 <https://github.com/PyCQA/prospector/issues/447>`_
* Fixed crash with merging multiple import warnings - `477 <https://github.com/PyCQA/prospector/issues/477>`_
* Fixed segfault when analysing code using cartopy - `403 <https://github.com/PyCQA/prospector/issues/403>`_