Clarify 'natural gender'
We have the following information for English and other languages, which might be confusing.
Both in the data file (in a comment) and in the spec we should make clear that:
Data indicating that English or the other languages don't have gender means in the scope of CLDR. Thus <grammaticalFeatures targets="nominal" locales="en"></grammaticalFeatures> does not imply that in other contexts English nouns do have gender. For example, English does have nouns like mother or lioness that have specific gender, and natural gender might be indicated by pronoun agreement ("The manager closed her book.").
Adding to Known issues for 39
(I removed the duplicate fil per CLDR-14284)