Nonblocking v2#102

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chendo wants to merge 13 commits into

Commits on Nov 6, 2015

Wrap filtering stage in a try catch
chendo
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Serialise non-blocking matching to prevent double-free due to multiple threads modifying priority factor cache
chendo
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Hide inline preview before kicking off a nonblocking query to prevent weirdness
chendo
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Commits on Nov 7, 2015

It's possible for bestMatchForQuery to not complete propely and return nil objects
chendo
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This should ensure that the return values are populated
chendo
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