+ provide more functions for xft-fontsets
+ accept scx's screen-type instead of the raw screen-number
+ added debugging functions XftPatternPrint(), XftFontSetPrint()
+ added XftDefaultHasRender()
- replaced most of symbol or symbol list arguments by enumerated types,
enum-sets and alists of enumerated types.
- reformed event representation. Every event has it's own record-type now.