klib.nim implements the following functionality in one file:

• Unix-like getopt and getopt_long with Python-like APIs. Adapted from ketopt.h.
• A gzip file reader that also seamlessly works with ordinary files.
• A FASTA/FASTQ parser based on kseq.h.
• Fast interval queries based on implicit augmented interval trees. Based on cgranges.

klib.nim is my weekend project to learn the basic of nim. I am not sure if I will write more nim code, but I will fix bugs in this repo.