Use `jQuery.fn.clone` method for a speeding up
Merge pull request #8 from ykzts/clone-wars

Use `jQuery.fn.clone` method for a speeding up
Don't free search lock when it callbacks with truthy second argument
Make some ListView methods be chainable
Make ListView appendable by invoking renderList multiple times
Explain the second argument of callback
Bump version to 0.0.3
Bugfix: Enable lazy callback with cache option
Implement unique constraint on ListView's shown items
Add utility function named `getStyles`
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Merge pull request #7 from ykzts/add-get-styles-func

Add utility function named `getStyles`
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