serde = { version = "1.0", features = ["derive"], optional = true }
serde_json = { version = "1.0", optional = true }
chunked_transfer = { version = "1.4", optional = true }
-futures = { version = "0.3" }
[dev-dependencies]
tokio = { version = "1.0", features = [ "macros", "rt" ] }