Cargo Features

Tangram has no features set by default.

[dependencies]
tangram = { version = "0.7.0", features = ["tokio_1"] }
tokio_1 = tokio

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.

tokio tokio_1?