Changes in version 0.2.1                        

Deprecated features

  - The function df_martian_chess() chess is deprecated in favor of
    icehouse_martian_chess().
  - The function looney_pyramids() is deprecatd in favor of
    looney_pyramid_game_system().

New features

  - New looney_pyramid_game_sytem() (replaces deprecated
    looney_pyramids()) gains a border argument to enable/disable a black
    border, the colors have been tweaked (e.g. a lighter "yellow" and a
    darker "blue"), adds three new colors ("cyan", "magenta", and
    "orange"), and now the has_pyramids binding returns TRUE.
    icehouse_game_system() is a new alias for
    looney_pyramid_game_system().

  - New icehouse piece setup functions:
    
      - icehouse_martian_chess() (replaces the deprecated
        df_martian_chess())
      - icehouse_none()
      - icehouse_pyramids()
      - icehouse_setup_by_name()

  - New PPN parser function that can be used with ppn::read_ppn():
    
      - icehouse_parser() with a looney_pyramid_parser() alias.

  - icehouse_games() returns a data frame with info about the game
    setups provided by this package.

                        Changes in version 0.1.4                        

  - Custom icehouse_pieces configuration returned by looney_pyramids()
    has been tweaked for improved rendering in piecepackr v1.11 when
    drawn in an oblique projection with its {grid} binding.

                        Changes in version 0.1.3                        

  - The colors used in the icehouse_pieces configuration returned by
    looney_pyramids() have been tweaked to make it easier to see the
    pips.

                        Changes in version 0.1.1                        

  - looney_pyramids() function which returns an icehouse pieces
    configuration.

  - looneyPyramidGrob() to help make icehouse pieces.

  - Game start functions:
    
      - df_martian_chess