Wrapper for a subset of the excellent Howard Hinnant's date library that provides some functions and additional types.
Created to shield agains API changes when Howard Hinnant's library was in active development, date_wrapper will soon be obsolete as underlying library will be a part of upcoming C++20. After wide adoption of C++20 a release will be made that will use standard library implementation instead of reference implementation and this wrapper will probably be around while older projects will need it. After that, date_wrapper will no longer be supported, although, some parts of date_wrapper will be probably reused in a separate date utils library, if it will make sense.