code: func (c *Col) SetType(cellType CellType) {
  	switch cellType {
  	case CellTypeString:
  		c.numFmt = builtInNumFmt[builtInNumFmtIndex_STRING]
  	case CellTypeNumeric:
  		c.numFmt = builtInNumFmt[builtInNumFmtIndex_INT]
  	case CellTypeBool:
  		c.numFmt = builtInNumFmt[builtInNumFmtIndex_GENERAL] //TEMP
  	case CellTypeInline:
  		c.numFmt = builtInNumFmt[builtInNumFmtIndex_STRING]
  	case CellTypeError:
  		c.numFmt = builtInNumFmt[builtInNumFmtIndex_GENERAL] //TEMP
  	case CellTypeDate:
  		// Cells that are stored as dates are not properly supported in this library.
  		// They should instead be stored as a Numeric with a date format.
  		c.numFmt = builtInNumFmt[builtInNumFmtIndex_GENERAL]
  	case CellTypeStringFormula:
  		c.numFmt = builtInNumFmt[builtInNumFmtIndex_STRING]
  	}
  }
docs: // SetType will set the format string of a column based on the type that you want to set it to.
  // This function does not really make a lot of sense.