lczech/genesis: genesis v0.25.0

This is a long overdue release that adds a lot of new features, and in particular introduces support for population genetics data, methods, and file formats, and adds an (optional) dependency on htslib.

• Add (optional) support for VCF files by wrapping htslib (which now is an optional dependency)
• Add reading support for (m)pileup, GFF/GTF, and PoPoolation2 sync files
• Add tools to work with alleleic variants (SNPs), genome regions, and sliding windows
• Add pool-sequencing variants of population genetic statistics, such as heterozygosity, Theta Watterson, Theta Pi, Tajima's D, and variants of F_ST, by re-implementing methods of PoPoolation and PoPoolation2

• Add filtering and transforming iterator classes
• Add harmonic mean functions
• Add binomial distribution function and binomial coefficient (n choose k) functions
• Add base64 encoding and decoding functions
• Add natural sorting function
• Add simple pure function cache class
• Add svg image embedding and rendering options
• Add simple thread pool class
• Add GzipBlockOutput stream class
• Refactor gzip input stream to work on concatenated gzip streams
• Adapt BmpWriter and SequencePrinter to new OutputTarget classes
• Fix placement sample PqueryName filtering functions
• Fix tree bipartition find subtree function
• Fix bug in tuple hash function
• Fix undefined behaviour in GzipStream destructor
• Bug fixes and speed improvents