Thu, 23 Feb 2012 12:08:59 +0100 huffman removed unnecessary constant bin_rl
Thu, 23 Feb 2012 11:53:03 +0100 huffman remove duplication of lemmas bin_{rest,last}_BIT
Thu, 23 Feb 2012 11:24:54 +0100 huffman remove lemmas Bit{0,1}_div2
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