NF: comso_disp (TODO: refinements)
RF+ENH: better display of datasets
DOC+SML: warbler is not a duck
Merge branch 'master' into _tent/disp
RF+DOC: indents and more documentation
NF: unit test
NF: add unit test
BF: better error message
RF: only store data for nodes that have a value for niml_dset
RF+BK: store data for all nodes for BV surfaces
BF: check for dim labels rather than values
ENH: add Bonferroni value
ENH: allow for datasets without .sa