message: fix bad parsing of header for skew symmetric matrices
diff: @@ -106,7 +106,7 @@ fn parse_header(header: &str) -> Result<(SymmetryMode, DataType), IoError> {
  SymmetryMode::General
  } else if header.contains("symmetric") {
  SymmetryMode::Symmetric
  - } else if header.contains("skewsymmetric") {
  + } else if header.contains("skew-symmetric") {
  SymmetryMode::SkewSymmetric
  } else if header.contains("hermitian") {
  SymmetryMode::Hermitian
  