1.0.1
  - fixed all warnings in CRAN checks
  - fixed the bug with two feature set mapping
  - added map.feature arguments for legends (stroke.title, stroke.legend)
  - changed default for control argument to FALSE
  - corrected Rmd, examples and help
  - added image arguments
  - added tile argument for layouts
  - added multiple tile argument
  - added tile.name argument
  - added argument glottolog.source (Many thanks to Robert Forkel for his issue and his work!)
  - fixed coloring problem
  - fixed makelink function
  - some coordinates and language names corrected and stored in glottolog.modified

1.0.0
  - initial release
