[mod] clean travis.yml
[doc] update todo
[fix] bad parent for comma and missing test
[enh] commalist on tuplenode.value
[mod] check that tuple without parenthesis also works
[mod] update progress
[mod] won't do this for now, nobody use it
[enh] dictnode.append_value -> listnode.append_comma
[enh] node.append_comma support getting a node instance
[enh] comma list on repr list