- corrected the results of Filter.is_active to account for default operation with no value - fixed formencode requirement for python 3 - update options filter error to include class name
0.1.31
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- corrected DateTimeFilter processing to avoid "invalid date" messages
0.1.30
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- fixed problem with lambda default args being processed by the grid
0.1.29
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- allow default operation passed to filter to be a callable
0.1.28
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- fixed an additional regression in DateFilter and DateTimeFilter validation
0.1.27
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- corrected DateFilter and DateTimeFilter operations for empty, not empty, and between