Should BOOST_CHRONO_VERSION be set to 2 by default?

[inetic]

The documentation says it should have been set to 2 since Boost 1.55. But as of writing this issue the default value is still set to 1.

[viboes]

Unfortunately, this migration path was not accepted as introduced breaking changes.

I have not had the courage to implement a V2 independent from the V1 :(

If some one can do it, please go ahead.

[tan-wei]

IMO, documents should be modified. It leads misunderstand now.

[jefftrull]

I just got burned by this :( Please update the documentation, thank you.