[Boost-users] boost serialisation 1.56, why does library version change, when no change in library ?

Subject: [Boost-users] boost serialisation 1.56, why does library version change, when no change in library ?
From: avib369 . (avibahra_at_[hidden])
Date: 2014-10-16 04:50:15

At boost 1.53 the library version was 10, however at boost 1.56 it has
jumped to 11.

I have not seen any documentation/release notes about boost serialisation
changes.
What has changed in boost serialisation to merit this change ?

The documentation in $BOOST_ROOT/libs/serialization/basic_archive.cpp
describes
the changes to boost library version, however it does *not* describe why it
jumped
from 10 -> 11.

Any help appreciated.

Ta,
   Avi