Sigil 0.4.1 is complete and available. This is mainly a maintenance release and fixes a number of bugs. Specifically a few bugs related to data loss. There was one major user visible change. The well-formed error dialog can be toggled not to show. This will cause errors to be auto fixed. Use this with care because the auto fix Sigil makes might not be what you want. As always see the changelog for a complete list of changes.