clean up file names
new data structure in parseCognates

{language.word => [root1, rootHeader,{tag1 => 1}]}

e.g:

{ Ache.juru => [MOUTH1, mouth[]]],
  Ache.juru ebe => [LIP1, lip{}],
  Guarani.ahy'o => [THROAT2, throat, {COMPOUND => 1,
                                      GEN => 1}] }