Add clippy::cargo and remove dependencies (#23)

Cargo.toml

@@ -3,7 +3,9 @@ name = "voprf"
 version = "0.1.0"
 description = "An implementation of a verifiable oblivious pseudorandom function (VOPRF)"
 authors = ["Kevin Lewi <[email protected]>"]
-categories = ["no-std"]
+repository = "https://github.com/novifinancial/voprf/"
+categories = ["no-std", "algorithms", "cryptography"]
+keywords = ["oprf"]
 license = "MIT"
 edition = "2018"
 readme = "README.md"
@@ -20,14 +22,11 @@ serialize = ["serde", "base64", "generic-array/serde", "curve25519-dalek/serde"]
 
 [dependencies]
 base64 = { version = "0.13", default-features = false, features = ["alloc"], optional = true }
-constant_time_eq = "0.1"
 curve25519-dalek = { version = "3", default-features = false }
 digest = "0.9"
 displaydoc = { version = "0.2", default-features = false }
 generic-array = "0.14"
 getrandom = { version = "0.2", optional = true }
-hkdf = "0.11"
-hmac = "0.11"
 num-bigint = { version = "0.4", default-features = false, optional = true }
 num-integer = { version = "0.1", default-features = false, optional = true }
 num-traits = { version = "0.2", default-features = false, optional = true }
@@ -42,18 +41,10 @@ zeroize = { version = "1", features = ["zeroize_derive"] }
 getrandom = { version = "0.2", features = ["js"], optional = true }
 
 [dev-dependencies]
-base64 = "0.13"
-bincode = "1"
-chacha20poly1305 = "0.8"
-criterion = "0.3"
 hex = "0.4"
 json = "0.12"
-lazy_static = "1"
-serde_json = "1"
 sha2 = "0.9"
-proptest = "1"
 regex = "1"
-rustyline = "8"
 voprf = { path = "", default-features = false, features = ["std"] }
 
 [package.metadata.docs.rs]