unikmer v0.15.0

• v0.15.0
  • unikmer:
    • binary file minor change: increase description maximal length from 128 B to 1KB.
    • separating k-mers (sketches) indexing and searching from unikmer, including unikmer db info/index/search.
  • unikmer count: fix syncmer.
  • unikmer dump: new flag --hashed.
  • rename unikmer stats to unikmer info, and add new column description.