Improve (and add overloading) Ada.Characters.Conversions.Is_Wide_String in checking Item is in BMP or surrogate pair,
Rename Ada.Strings.Bounded.Generic_Bounded_Length.Instance to Bounded_Strings
Change nested generic packages of Ada.Strings.Generic_Bounded, and separate instantiations of them similar to Ada.Strings.Generic_Unbounded
Add System.Native_Encoding.Image and Current_Encoding
Improve conversion from UTF-16 to UTF-8 in buffer size, and fix buffer sizes of some overloads having Output_Scheme of Ada.Strings.UTF_Encoding.Conversions.Convert
Improve System.Native_Encoding in handling buffer overflow, and remove overloaded Convert raising Constraint_Error
Change status types and overloaded set of System.Native_Encoding.Convert