message: Make all state constructors noexcept
diff: @@ -34,15 +34,15 @@ struct state {
  int32_t line;
  int32_t column;
  - state() : i(), e(), code(pec::success), line(1), column(1) {
  + state() noexcept : i(), e(), code(pec::success), line(1), column(1) {
  // nop
  }
  - explicit state(Iterator first) : state() {
  + explicit state(Iterator first) noexcept : state() {
  i = first;
  }
  - state(Iterator first, Sentinel last) : state() {
  + state(Iterator first, Sentinel last) noexcept : state() {
  i = first;
  e = last;
  }
  