Just wondering - boost 1_68?

[S. L. Garwood via macports-users]

Any reason boost has not progressed past 1_67? 
I know 1_68 is supposed to have broken some things .. but it might be nice as a 
‘beta’ option.
I went ahead and installed 1_68 on Majove - not as a port. I needed it for some 
development work.
It seems ok.