Cabal revisions of sequence-formats-1.4.0

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 cabal-version: >=1.10 name: sequence-formats version: 1.4.0+x-revision: 1 license: GPL-3 license-file: LICENSE maintainer: stephan.schiffels@mac.com     testDat/example.vcf  library+    build-depends: base <4.15+     exposed-modules:         SequenceFormats.RareAlleleHistogram         SequenceFormats.FreqSum