Update copyright years

Update copyright years

Update copyright years

Add support for modular build structure. (#111)

This is part of the effort to make the Boost libraries "modular" for build and consumption. See https://lists.boost.org/Archives/boost/2024/01/255704.php and https://github.com/grafikrobot/boost-b2-modular/blob/b2-modular/README.adoc for more information.

This PR depends on the following other PRs being merged to both develop and master branches of the respective repos:

- boostorg/boost#854

Add support for modular build structure. (#111)

This is part of the effort to make the Boost libraries "modular" for build and consumption. See https://lists.boost.org/Archives/boost/2024/01/255704.php and https://github.com/grafikrobot/boost-b2-modular/blob/b2-modular/README.adoc for more information.

This PR depends on the following other PRs being merged to both develop and master branches of the respective repos:

- boostorg/boost#854

Remove obsolete code (#109)

Remove obsolete code (#109)

Remove obsolete code (#109)

Remove obsolete code (#109)

Remove deprecated boost/swap.hpp include. (#108)

This header is deprecated and will be removed. There is
boost/core/invoke_swap.hpp as a replacement, but it isn't needed in this case.