Move tuple utility file into new directory
Move arithmetic_tuple_facade into new namespace
Move operator traits into new namespace
Move small_vector_facade & small_vector_adaptor
Move coordinate header
Move shape_cast into new organization
Reorganize index_cast function
Reorganize index_tuple
Eliminate redundant __tuple_head file
Reorganize type_traits.hpp header
Reorganize unwrap_tuple_if_not_nested
Reorganize make_tuple_if_not_nested
Eliminate vestigal __nested_execution_policy_new file
Reorganize tuple_of_references
Reorganize tuple_tail
Rename tuple_tail tuple_tail_old
Use forward_tuple_tail where appropriate
Fix bug in the implementation of forward_tuple_tail & tuple_tail
Use forward_tuple_tail where appropriate
Eliminate tuple_tail_old
Reorganize barrier
Reorganize exception_list
Reorganize execution_categories