Captus v0.9.99

• Now any BUSCO lineage database can be used as reference target file, just download a .tar.gz from https://busco-data.ezlab.org/v5/data/lineages/ and provide the file path for Captus extraction
• Added shortcut for captus_assembly as simply captus (data assembly)
• Added entry point for captus_design and a shortcut as captusd (bait design)
• The cluster step of bait design now reports mean number of copies per locus instead of just classifying it as single- or multi-copy
• Added a function to create a reference target file (for locus extraction) after bait clustering and tiling
• Code cleanup and minor cosmetic changes