v0.2.9

• The contract has the corpus checks of packing, highways and the joint corpus. docs/CORPUS-CHECKS.md tells the rules.
• ClaimBreak is one broken claim of a corpus. It has the name of the claim, a text and the ids of the inputs.
• checkDeclared(inputs, declares, claim, ids) checks the claim claims.declared. The hook declares gives the properties of one input.
• declaredCounts counts the inputs of each property. declaredClaimOf reads claims.declared of a manifest. DeclaredClaim and Declares are their types.
• corpusHashOf(corpus, inputs) gives the hash of a corpus. The value is equal to the corpus hash of packing.
• checkSplit(split, corpus, name) checks a split file corpus-split/1. splitFolds gives the folds of one split, and throws for a problem.
• leaveOneSeedOut(seeds) gives one fold for each seed. splitFileName, SPLIT_SCHEMA, CorpusSplit, SplitFold, SplitCorpus and CorpusEntry are the other parts.