Pytil

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- Fixed: README formatting error

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- Major:

- ``path.digest`` renamed to ``path.hash`` (and added ``hash_function`` parameter)
- renamed ``cli`` to ``click``
- require Python 3.5 or newer
- Changed: ``asyncio.stubborn_gather``:

- raise ``CancelledError`` if all its awaitables raised ``CancelledError``.
- raise summary exception if any awaitable raises exception other than
``CancelledError``
- log exceptions, as soon as they are raised

- Minor:

- Added:

- ``click.assert_runs``
- ``hashlib.base85_digest``
- ``logging.configure``
- ``path.assert_equals``
- ``path.assert_mode``
- ``test.assert_matches``
- ``test.assert_search_matches``
- ``test.assert_text_contains``
- ``test.assert_text_equals``

- Fixes:

- ``path.remove``: raised when ``path.is_symlink()`` or contains a symlink
- ``path.digest/hash``: directory hash collisions were more likely than necessary
- ``pymysql.patch``: change was not picked up in recent pymysql versions

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- Fixed: README formatting error

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- Removed:

- ``cli.Context``, ``cli.BasicsMixin``, ``cli.DatabaseMixin``,
``cli.OutputDirectoryMixin``
- ``pyqt`` module
- ``URL_MAX_LENGTH``
- ``various`` module: ``Object``, ``PATH_MAX_LENGTH``

- Enhanced:

- ``data_frame.split_array_like``: ``columns`` defaults to ``df.columns``
- ``sqlalchemy.pretty_sql``: much better formatting

- Added:

- ``algorithms.toset_from_tosets``: Create totally ordered set (toset) from
tosets
- ``configuration.ConfigurationLoader``: loads a single configuration from one
or more files directory according to XDG standards
- ``data_frame.assert_equals``: Assert 2 data frames are equal
- ``data_frame.equals``: Get whether 2 data frames are equal
- ``dict.assign``: assign one dict to the other through mutations
- ``exceptions.InvalidOperationError``: raise when an operation is
illegal/invalid, regardless of the arguments you throw at it (in the
current state).
- ``inspect.call_args``: Get function call arguments as a single dict
- ``observable.Set``: set which can be observed for changes
- ``path.chmod``: change file or directory mode bits (optionally recursively)
- ``path.digest``: Get SHA512 checksum of file or directory
- ``path.read``: get file contents
- ``path.remove``: remove file or directory (recursively), unless it's missing
- ``path.write``: create or overwrite file with contents
- ``series.assert_equals``: Assert 2 series are equal
- ``series.equals``: Get whether 2 series are equal
- ``series.split``: Split values
- ``test.temp_dir_cwd``: pytest fixture that sets current working directory to
a temporary directory

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No changelog

.. _semver: http://semver.org/spec/v2.0.0.html