ENH ui:  wildcard handling
ENH Dataset.as_table:  add title and caption parameters
ENH Dataset.eval():  use globals from scipy
API fmtxt:  Table.save_tsv() --> Table.save_txt()
ENH load.fiff:  allow KIT sqd as input
WIP:  axes in ms
WIP API:  `.sub()` to replace `.subset()` and `.subdata()`