Fix python list widget.
Merge remote branch 'upstream/master' into rose-edit.fix_list_widget_bug
Metatype error checking made more stringent.
Create _REV and _BASE variables for all projects
Align continuation lines
Merge pull request #1119 from arjclark/rose-edit.fix_list_widget_bug

Fix python list widget.
Merge pull request #1121 from scwhitehouse/rose_stem_extra_variables

Create _REV and _BASE variables for all projects