Dql

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* Fix bug where query would sometimes display 'No Results' even when results were found.

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* Differentiate LIMIT and SCAN LIMIT
* Options and query syntax for ``throttling`` the consumed throughput
* Crash fixes and other small robustness improvements

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* SELECT <attributes> can now use full expressions

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* LOAD command to insert records from a file created with ``SELECT ... SAVE``
* Default SAVE format is pickle
* SAVE command can gzip the file

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* Don't print results to console when saving to a file
* 'auto' pagesize to adapt to terminal height
* When selecting specific attributes with KEYS IN only those attributes are fetched
* ORDER BY queries spanning multiple pages no longer stuck on first page
* Column formatter fits column widths more intelligently
* Smart formatter is smarter about switching to Expanded mode

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* Tab completion for Mac OS X