Cargo Features

Folder has no features set by default.

[dependencies]
folder = { version = "0.9.0", features = ["asynchronous"] }
asynchronous = futures

Enables asynchronous of loop

Affects folder::asynchronous

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

futures asynchronous?