Fixes:
- fixed truncation of floating-point values when using ostreams
- fixed missing value deduction guides for dates and times
- fixed potential ODR issues relating to exception mode handling etc.
- fixed some documentation issues
Additions:
- added serialization round-trip tests
- added
node::is_number() - added
node_view::is_number() - added
node_view::value_or() - added hexfloat parsing support for all implementations (not just
<charconv>ones)