Hey Ben,

I know that CoverM isn't supposed to be used as a library and that implementing this would require some work, so feel free to ignore/close this issue if you think it is not worth it.

I just updated pyCoverM to use the latest release (0.6.0) and I noticed that I can't compile the wheel on Windows because of Galah:

error[E0433]: failed to resolve: could not find `unix` in `os`
   --> C:\Users\runneradmin\.cargo\registry\src\github.com-1ecc6299db9ec823\galah-0.3.0\src\cluster_argument_parsing.rs:385:22
    |
385 |             std::os::unix::fs::symlink(link, std::path::Path::new(&current_stab)).expect(&format!(
    |                      ^^^^ could not find `unix` in `os`

Because dereplication is not something that most people would expect in a tool to estimate contig/genome coverage, maybe it could be moved to the [features] section of the Cargo.toml file and then Galah could be marked as an optional requirement. This way, CoverM could be compiled on Windows.