0.9.0

• ✨ new features:
  • support for non-contiguous coarse channel selections (picket fence!) 🎉
• 🙏 quality of life:
  • Remove the --ignore-dut1 flag
    • The DUT1 of an observation is now written as the UT1UTC key in a
      measurement set. It continues to be written to UT1UTC in uvfits files.
      As this value has no effect on the rest of the visibility file, the
      --ignore-dut1 flag is now useless.
  • Clippy lints
  • Update Marlu
    • The ERFA C library is no longer needed, so all mentions of it and
      installations of it have been removed.
  • Use a newer aoflagger_sys crate
    • This allows for AOFLAGGER_INCLUDE_DIR and AOFLAGGER_LIB to be set and
      point to where aoflagger is installed, rather than searching in a default
      location
  • report error messages properly, not as Rust-internal representation