ganon version 1.4.0

• improved test coverage
• improved filter size calculation based on --max-fp or --filter-size
• new --mode on ganon build and ganon build-custom to better control filter trade-off of speed and size
  • By default --mode avg is used and will balance speed (number of bins created) and size of the final filter
  • --mode faster creates a slightly larger filter with faster classification speeds
  • --mode fastest creates a larger filter with even faster classification speeds
  • --mode smaller creates a slightly smaller filter with slower classification speeds
  • --mode smallest creates the smallest as possible filter with higher impact on classification speeds
  • when --filter-size is used instead of --max-fp, smaller/smallest control to the false positive rate instead of the size