Crash

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- Fixed misconfigured logging that caused warning logs being printed
to stderr.

- Fixed an issue with pasting multi-line statements from clipboard.

- Added argcomplete support. If argcomplete is available bash argument
completion will work if argcomplete is loaded.

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- Fix: print stacktrace when crash is launched in verbose mode

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- Fix: query duration was rounded incorrectly to second precision

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- Fix: do not print ``rows affected`` in status message
of DDL statements and other statements that do not affect rows

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- Fix: return complete sql exception message

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- added ``--format`` command line option
to support different response output formats such as
``tabular``, ``raw``, ``json``, ``csv`` and ``mixed``

- BREAKING CHANGE
the ``CONNECT <host>`` client command was changed to ``\connect <host>``
see documentation for further details

- alternative cli implementation using prompt_toolkit

- added coloured printing when in interactive shell