New Features
------------
- - Implemented P0627R6 (Function to mark unreachable code)
+- Implemented P0627R6 (Function to mark unreachable code)
- - Implemented P1165R1 (Make stateful allocator propagation more consistent for ``operator+(basic_string)``)
+- Implemented P1165R1 (Make stateful allocator propagation more consistent for ``operator+(basic_string)``)
- - `pop_heap` now uses an algorithm known as "bottom-up heapsort" or
- "heapsort with bounce" to reduce the number of comparisons, and rearranges
- elements using move-assignment instead of `swap`.
+- `pop_heap` now uses an algorithm known as "bottom-up heapsort" or
+ "heapsort with bounce" to reduce the number of comparisons, and rearranges
+ elements using move-assignment instead of `swap`.
API Changes
-----------