Update C++03 deprecation message

diff --git a/.github/workflows b/.github/workflows
Peter Dimov 3708bcab30 Update C++03 deprecation message		4 months ago
.github/workflows	Update ci.yml	7 months ago
doc	Document the deprecation of BOOST_RATIO_EXTENSIONS	5 months ago
example	Remove unnecessary 'ex_chrono' files from example/	7 months ago
include/boost	Update C++03 deprecation message	4 months ago
meta	[skip ci] Add "cxxstd" json field. The "cxxstd" json field is being added to each Boost library's meta json information for libraries in order to specify the minumum C++ standard compilation level. The value of this field matches one of the values for 'cxxstd' in Boost.Build. The purpose of doing this is to provide information for the Boost website documentation for each library which will specify the minimum C++ standard compilation that an end-user must employ in order to use the particular library. This will aid end-users who want to know if they can successfully use a Boost library based on their C++ compiler's compilation level, without having to search the library's documentation to find this out.	3 years ago
test	Update appveyor.yml	9 months ago
.gitattributes	Move top-level boost directory over to "devel" (temporarily)	16 years ago
.travis.yml	Rollback cmake tests until they are good;	4 years ago
CMakeLists.txt	Regenerate CMakeLists.txt	2 years ago
README.md	Added README.md.	9 years ago
appveyor.yml	Update appveyor.yml	9 months ago
index.html	Ratio:: change doc directory from boost_ratio to ratio	13 years ago