+ * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
+ arguments (lp#710017)
+ * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
+ distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
+ &co. (lp#718039)
+ * optimization: ERROR and CERROR are approximately 5 times faster.
+ * optimization: optimized constructors are used for MAKE-INSTANCE of classes
+ with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
+ SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
+ up instance creation in those cases.
+ * optimization: arithmetic operations with multiple constant arguments in now
+ have them reduced at compile-time. (lp#676414)
+ * optimization: determining current character position on string-streams for
+ pretty-printing was overly slow.