v1.4.0 load empty list A list containing exactly one empty string is syntactically equivalent to an empty list. Until now it has been loaded as a list containing an empty string. From now on it will be loaded as an empty list instead because: - This is an edge case concerning lists of strings only. Trying to load an empty list of integers previously caused an error and now becomes possible. - An empty list sounds more probable than a list containing an empty string. see commit 00f55618d7373a1df1c0c7e6d5a886ef2b99ff03