Cargo Features

jsona-util has no features set by default.

[dependencies]
jsona-util = { version = "0.4.0", features = ["fetch"] }
fetch = reqwest

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.

reqwest fetch?

Enables reqwest ^0.11