added Doxyfile
started documenting AddressSpace
fixed definition of AddressSpace::CANNOT_EXCEED
continued documenting AddressSpace
finished documenting AddressSpace
added Pointer
documented Appender
started documenting Pointer
finished documenting Pointer
documented Delete{,Array}
documented Unref
added copy-constructors and copy-assignment operators to smart pointer classes
fixed too eager copy-paste in doc of Unref
added Ref
hid away IntegerBoundsImpl as private IntegerBounds::BoundsImpl
documented AddressSpace::{Address,Space}
added missing @file documentation
documented IntegerBounds
documented PlusAssignAppender
documented ReferenceCounted