Memory management

Detailed Description

Classes, functions and definitions to manage different kinds of memory.

Topics
	Address spaces
	Currently supported address spaces and tools to work with them.
	Allocators
	Custom allocators that satisfy the nda::mem::Allocator concept and allocator wrappers that check for memory leaks and collect statistics on memory allocations.
	Handles
	Handle types that own or reference a block of memory.
	Memory policies
	Memory management policies that can be used with nda::basic_array and nda::basic_array_view.
	Memory utilities
	Generic memory-management functions that abstract over different address spaces, plus related utilities.