This replaces the errol backend with one based on ryu. The 128-bit
backend only is implemented. This supports all floating-point types and
does not use fp logic to print.
Closes #1181.
Closes #1299.
Closes #3612.
c6ad551cd2Marc Tiehuis committed on 3/9/2024, 2:57:25 AMparent9cf28d1