Update jedi to 0.17.0

[pyup-bot]

This PR updates jedi from 0.15.2 to 0.17.0.

Changelog

0.17.0

+++++++++++++++++++

- Added ``Project`` support. This allows a user to specify which folders Jedi
should work with.
- Added support for Refactoring. The following refactorings have been
implemented: ``Script.rename``, ``Script.inline``,
``Script.extract_variable`` and ``Script.extract_function``.
- Added ``Script.get_syntax_errors`` to display syntax errors in the current
script.
- Added code search capabilities both for individual files and projects. The
new functions are ``Project.search``, ``Project.complete_search``,
``Script.search`` and ``Script.complete_search``.
- Added ``Script.help`` to make it easier to display a help window to people.
Now returns pydoc information as well for Python keywords/operators.  This
means that on the class keyword it will now return the docstring of Python's
builtin function ``help('class')``.
- The API documentation is now way more readable and complete. Check it out
under https://jedi.readthedocs.io. A lot of it has been rewritten.
- Removed Python 3.4 support
- Many bugfixes

This is likely going to be the last minor version that supports Python 2 and
Python3.5. Bugfixes will be provided in 0.17.1+. The next minor/major version
will probably be Jedi 1.0.0.

0.16.0

+++++++++++++++++++

- **Added** ``Script.get_context`` to get information where you currently are.
- Completions/type inference of **Pytest fixtures**.
- Tensorflow, Numpy and Pandas completions should now be about **4-10x faster**
after the first time they are used.
- Dict key completions are working now. e.g. ``d = {1000: 3}; d[10`` will
expand to ``1000``.
- Completion for "proxies" works now. These are classes that have a
``__getattr__(self, name)`` method that does a ``return getattr(x, name)``.
after loading them initially.
- Goto on a function/attribute in a class now goes to the definition in its
super class.
- Big **Script API Changes**:
 - The line and column parameters of ``jedi.Script`` are now deprecated
 - ``completions`` deprecated, use ``complete`` instead
 - ``goto_assignments`` deprecated, use ``goto`` instead
 - ``goto_definitions`` deprecated, use ``infer`` instead
 - ``call_signatures`` deprecated, use ``get_signatures`` instead
 - ``usages`` deprecated, use ``get_references`` instead
 - ``jedi.names`` deprecated, use ``jedi.Script(...).get_names()``
- ``BaseName.goto_assignments`` renamed to ``BaseName.goto``
- Add follow_imports to ``Name.goto``. Now its signature matches
``Script.goto``.
- **Python 2 support deprecated**. For this release it is best effort. Python 2
has reached the end of its life and now it's just about a smooth transition.
Bugs for Python 2 will not be fixed anymore and a third of the tests are
already skipped.
- Removed ``settings.no_completion_duplicates``. It wasn't tested and nobody
was probably using it anyway.
- Removed ``settings.use_filesystem_cache`` and
``settings.additional_dynamic_modules``, they have no usage anymore. Pretty
much nobody was probably using them.

Links

• PyPI: https://pypi.org/project/jedi
• Changelog: https://pyup.io/changelogs/jedi/
• Repo: https://github.com/davidhalter/jedi