added converter BoolDisplay#7

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verybadsoldier:NumDisplayBinarize

Commits on Apr 3, 2015

added parameter 'bin' to NumDisplay to binarize value
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Commits on Apr 4, 2015

Revert "added parameter 'bin' to NumDisplay to binarize value"
verybadsoldier
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moved binarization to separate converter "BoolDisplay"
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