Crate-smartnow

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- updated crate to 0.30.0

- crash: added support for ``ALTER`` statements.

- crash: added support for ``REFRESH`` statements.

- crash: added support for multi-statements for stdin and ``--command`` parameter

- crash: renamed cli parameter ``--statement/-s`` to ``--command/-c``

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- updated crate to 0.29.0. This release contains backward incompatible changes
related to blob support.

- updated crash autocompletion keywords

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- fix a bug where setting an empty list on a multi valued field results in returning ``None``
after refreshing the session.

- the test layer now uses the '/' crate endpoint in order to wait for crate to
be available.

- updated crate to 0.28.0. This release contains backward incompatible changes.

- changed the test layer to no longer use the `-f`
option. Note that this breaks the test layer for all previous crate
versions.

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- fix readline bug in windows bundle

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- readline support for windows

- updated crate to 0.26.0

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- added single-file crash bundle ``crash.zip.py``