message: Update changelog for 0.9
diff: @@ -6,6 +6,16 @@ Changelog
  - Make FillInReduction enum non exhaustive to prevent excessive breakage
  when new algorithms are implemented. **breaking change**
  - Make rayon optional **breaking change**
  + - Make fill in reduction enum non exhaustive **breaking change**
  + - Add SuiteSparse's CAMD in the fill in reduction enum
  + - Add structure only sparse matrix type
  + - Add Kronecker product
  + - Implemnt Approx for matrix comparison
  + - Various performance improvements with code patterns enabling removal
  + of bounds checking by the compiler
  + - Improve performance of sparse matrix creation by checking if indices are
  + sorted and sorting only if necessary for owning matrices.
  + - Fix CSC/CSR multiplication which would fail without reason.
  - 0.8.1
  - Expose the ``num_kinds`` module to allow generic usage of matrix market
  serialization functions in client crates
  