+- added some extra convenience functions to wxRect such as
+ GetBottomRight (Hajo Kirchhoff)
+- Changed built-in regex library to a unicode-compatible one (Ryan Norton)
+- added extra convenience functions to wxPoint for adding a
+ wxSize (Wlodzimierz Skiba)
+- intermediate wxIPaddress class added to prepare for
+ wxIPV6address (Ray Gilbert)