P1467R9 Extended floating-point types and standard names

…constructors

P2582R1 Wording for class template argument deduction from inherited constructors.

P1774R8 Portable assumptions

P2295R6 Support for UTF-8 as a portable source file encoding

P2513R3 char8_t Compatibility and Portability Fix

P2460R2 Relax requirements on wchar_t to match existing practices

…ailing-return-type"

P2579R0 Mitigation strategies for P2036 "Changing scope for lambda trailing-return-type"

…ory should use const F&

P1223R5 find_last

…tors]

Also mark ATOMIC_FLAG_INIT as freestanding (added by LWG3659).

P1642R11 Freestanding Library: Easy [utilities], [ranges], and [iterators]

Editorial changes:
* The return types of operator+ and operator- had been misspelled in
  the synopsis (but not in the detailed specification), and they have
  been fixed.
* The view typedef-name views::stride has been marked freestanding as
  per P1642R11.

P1899R3 stride_view

Editorial changes:
* Added cross references in [tuple.rel] pointing at
  [basic.lookup.argdep].
* Addedd cross reference in [pairs.pair] pointing at
  [range.utility.helpers] for "different-from".
* Reworded section title in [tuple.common.ref].
* Added references in synopsis.

P2165R4 Compatibility between tuple and tuple-like objects

P2278R4 cbegin should always return a constant iterator

Two examples are omitted because we cannot currently render them
in-place.

…uple to avoid confusion with the grammarterm of the same name

These additions are part of LWG-Motions 6 and 7 (P0429R9 "flat_map"
and P1222R4 "flat_set").

P2286R8 Formatting Ranges

…for Integral Types in <charconv> Header