unikmer v0.9.0

Changes

• v0.9.0
  • unikmer: new binary format supporting optional Taxids.
  • deleted command: unikmer subset.
  • new command: unikmer head for extracting the first N k-mers.
  • new command: unikmer tsplit for splitting k-mers according to taxid.
  • unikmer grep: support searching with taxids.
  • unikmer count: support parsing taxid from FASTA/Q header.