• The link to https://github.com/expnkx/fast_io in the top level readme is dead.
• Documentation in ryu_parse.h says that RYU_OPTIMIZE_SIZE is not supported, but in s2d.c it actually uses the large or small lookup tables, depending on the existence of the define.

Is the string to float parsing still considered experimental? What features are possibly missing?