* Replaced use of TIntegerList to maintain a list of colours in colour table in TRTFColourTable with TList<TColor>.
* Changed TRTFFont from a class to a record with methods and gave constructor optional parameters. Replaced IsEqual method with Compare method.
* Replaced use of TObjectListEx to maintain list of fonts in font table in TRTFFontTable with TList<TRTFFont>.
* Replaced calls to FreeAndNil with direct calls to object's Free method.
* Removed methods made redundant by other changes.
