trivial_abi, nodiscard (#21)

* trivial_abi, nodiscard
- sets trivial_abi attribute on basic string and fixed string
- sets nodiscard on expected
- renames namespace to v3_3

* fix build

---------

Co-authored-by: Artur Bać <artur@ebasoft.com.pl>

Author: arturbac

include/small_vectors/algo/bound_leaning_lower_bound.h

@@ -5,7 +5,7 @@
 #include <iterator>
 
 /// \brief Burrows–Wheeler transform
-namespace small_vectors::inline v3_2::algo::lower_bound
+namespace small_vectors::inline v3_3::algo::lower_bound
   {
 
 // Idea from Andrei Alexandrescu on improved lower bound
@@ -18,8 +18,9 @@ struct bound_leaning_lower_bound_fn
     typename compare_type>
     requires std::
       invocable<compare_type, typename std::iterator_traits<iterator>::value_type const &, value_type const &>
-    constexpr auto operator()(iterator first, sentinel last, value_type const & v, compare_type less) const
-    noexcept(noexcept(less(*first, v))) -> iterator
+    constexpr auto operator()(iterator first, sentinel last, value_type const & v, compare_type less) const noexcept(
+      noexcept(less(*first, v))
+    ) -> iterator
     {
     if(first == last)
       return iterator(last);  // Convert sentinel to iterator if they're different types
@@ -71,4 +72,4 @@ struct bound_leaning_lower_bound_fn
   };
 
 inline constexpr bound_leaning_lower_bound_fn bound_leaning{};
-  }  // namespace small_vectors::inline v3_2::algo::lower_bound
+  }  // namespace small_vectors::inline v3_3::algo::lower_bound

include/small_vectors/algo/bwt.h

@@ -8,7 +8,7 @@
 #include <boost/container/flat_map.hpp>
 
 /// \brief Burrows–Wheeler transform
-namespace small_vectors::inline v3_2::algo::bwt
+namespace small_vectors::inline v3_3::algo::bwt
   {
 namespace concepts
   {
@@ -175,4 +175,4 @@ struct decode_t
 
 template<char end_char>
 inline constexpr decode_t<end_char> decode;
-  }  // namespace small_vectors::inline v3_2::algo::bwt
+  }  // namespace small_vectors::inline v3_3::algo::bwt