Cargo Features

[dependencies]
substrate-bip39 = { version = "0.6.0", default-features = false, features = ["std"] }
default = std

The std feature is set by default whenever substrate-bip39 is added without default-features = false somewhere in the dependency tree.

std default

Enables alloc and std of zeroize, std of hmac, pbkdf2, schnorrkel, and sha2

substrate-bip39 has 2 features without comments.