-casts << {:long=>'no_stream', :short=>'x', :type=>'flag', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'data_out', :short=>'o', :type=>'file', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'encoding', :short=>'e', :type=>'string', :mandatory=>false, :default=>'illumina1.3', :allowed=>allowed_enc, :disallowed=>nil}
-casts << {:long=>'compress', :short=>'Z', :type=>'flag', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
+casts << {long: 'no_stream', short: 'x', type: 'flag', mandatory: false, default: nil, allowed: nil, disallowed: nil}
+casts << {long: 'data_out', short: 'o', type: 'file', mandatory: false, default: nil, allowed: nil, disallowed: nil}
+casts << {long: 'encoding', short: 'e', type: 'string', mandatory: false, default: 'base_33', allowed: allowed_enc, disallowed: nil}
+casts << {long: 'compress', short: 'Z', type: 'string', mandatory: false, default: nil, allowed: "gzip,bzip,bzip2", disallowed: nil}