Support --cleanup flag

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#96 opened on Jul 22, 2016 0 comments 0 reactions 0 assignees View on GitHub

enhancement

Description

The `--cleanup` flag is mutually exclusive to `--alter`. It indicates we wish to clean up _ghost_ and _changelog_ tables.

Like `--alter`, it would default to _noop_ (in which case it should print the `drop` statements), and would support `--execute`

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