Wed, 30 Sep 2009 22:31:16 +0200 wenzelm handle Type.TYPE_MATCH, not arbitrary exceptions;
Wed, 30 Sep 2009 22:27:20 +0200 wenzelm removed redundant Sign.certify_prop, use Sign.cert_prop instead;
Wed, 30 Sep 2009 22:26:47 +0200 wenzelm PARALLEL_GOALS: proper scope for exception FAILED, with dummy argument to prevent its interpretation as variable;
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