P0645 Text Formatting

[jensmaurer]

P0645R4 Text Formatting (Victor Zverovich)

https://issues.isocpp.org/show_bug.cgi?id=322

[jensmaurer]

P0645R5 Text Formatting (Victor Zverovich)

[jensmaurer]

Titus Winters: This has updates that need LEWG review.

[tituswinters]

LEWG in Kona:
Remove basic_format_context<>::parse_context().
SF F N A SA
7 2 0 0 0

Unanimous consent to all other design changes presented.

Forward back to LWG as written for C++20.
SF F N A SA
8 4 0 0 0

[wg21bot]

P0645R7 Text Formatting (Victor Dyachenko)