use subcommand instead of so many commands

[jianshu93]

Hi fasten team,

In some cases where I have limited disk space for default rust binary install path, I have to compile it and put binary into a user path, I find it to be not so convenient for so many commands. Is it possible to use subcommand for each commands, just like what seqkit did, I feel this way it is more natural. Also clap 4.5 can be use for such a case.

Thanks,

Jianshu

[lskatz]

Hi, this seems like a good idea but it would be a huge overhaul. Do you feel like the executables take too much space? It seems to be at about 35M for me which is not very large considering the size of fastq.gz files that Fasten would be analyzing.