message: Test case-sensitivity of features
diff: @@ -440,7 +440,11 @@ mod test {
  // Support set 2
  let supported = HashSet::from_iter(
  - ["nutrients".to_string(), "freedom".to_string()]
  + [
  + "nutrients".to_string(),
  + "freedom".to_string(),
  + "Water".to_string(), // features are case sensitive (and lowercase by convention)
  + ]
  .iter()
  .cloned(),
  );
  