Revert "Removed spans feature from default"

Ertanic · Ertanic · commit 512131803db3 · 2025-03-17T13:30:01.000+03:00
This reverts commit 460c365.
diff --git a/fluent-syntax/Cargo.toml b/fluent-syntax/Cargo.toml
@@ -37,7 +37,7 @@ serde_json.workspace = true
 glob = "0.3"
 
 [features]
-default = []
+default = ["spans"]
 spans = []
 serde = ["dep:serde"]
 json = ["serde", "dep:serde_json"]
