constructor
A destructor is present on this object, but not explicitly documented in the source.
sets terminal colors. fg is foreground, bg is background
fills all cells with a character
fills a rectangle with a character
flush to terminal
writes a character ch at a position (x, y)
writes a character ch at a position (x, y) with fg as foreground ang bg as background color
Wrapper to arsd.terminal to make it work bit more like termbox-d