Crate

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- updated crate to 0.31.0

- client: fixed error handling on wrong content-type and bad status codes (on connect)

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- removed the crate shell ``crash`` from this package. it will live
now under the name ``crate-shell`` on pypi.

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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

- Fix a bug where setting an empty list on a multivalued field results in
returning `None` after refreshing the session

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- fix readline bug in windows bundle