v0.25

 - Fix build under MSWin32 64-bit (GH#17) (thanks, @plicease!)
 - Support explicit string length of 0 in MemPtr -> tostr()
   (GH#18) (thanks, @klaus)
 - Add FFI::Raw::Ptr base class for pointer objects
   (GH#20) (GH#22) (thanks, @plicease!)