feat: tracing is now optional

Cargo.toml

@@ -20,16 +20,18 @@ all-features = true
 default = []
 indexmap = ["dep:indexmap"]
 chrono = ["dep:chrono"]
+tracing = ["dep:tracing"]
 
 [dependencies]
 bytecount = "0.6"
+cfg-if = "1.0.0"
 chrono = { version = "0.4", optional = true }
 indexmap = { version = "2.1", optional = true }
 jetscii = "0.5"
 memchr = "2.5"
 nom = { version = "7.1", default-features = false, features = ["std"] }
 rowan = "0.15"
-tracing = "0.1"
+tracing = { version = "0.1", optional = true }
 
 [dev-dependencies]
 criterion = "0.5"
@@ -41,6 +43,10 @@ tracing-subscriber = { version = "0.3", features = ["fmt"] }
 name = "parse"
 harness = false
 
+[[example]]
+name = "parse"
+required-features = ["tracing"]
+
 [profile.dev.package]
 insta.opt-level = 3
 similar.opt-level = 3