v1.29.1

-- Simplify DataTreeClass.AutoSetDataStorageScheme to default to 'files' since in AtlasViewer it doesn't matter what the save scheme was that Homer3 used. Defaulting to 'files' means that whether the save scheme was 'memory' or 'files' AV is sure to find the output as opposed to a 'memory' setting if the output is not found in memory it'll give up looking. This change was propagated from AV.