derive: Fix missing `visit` feature on syn
@@ -13,7 +13,7 @@ proc-macro = true
path = "lib.rs"
[dependencies]
-syn = { version = "1", features = ["extra-traits", "full"] }
+syn = { version = "1", features = ["extra-traits", "full", "visit"] }
quote = "1"
heck = "0.3"
proc-macro2 = "1"
