Cargo Features

[dependencies]
ratio-matrix = { version = "0.4.2", default-features = false, features = ["serde"] }
default = serde

The serde feature is set by default whenever ratio-matrix is added without default-features = false somewhere in the dependency tree.

serde default

Enables serde and serde_json, serde of implicit-clone ^0.4.9

ratio-matrix has 2 features without comments.