Version of implementation for docs

[JS]

Can we get the version of implementation/addition of a feature in 
the docs. e.g., if X feature/method/library is added into dmd 
version v, then the docs should display that feature.

For example, when I go to http://dlang.org/phobos/object.html I 
see tsize. When I try to use it on my class I dmd says it doesn't 
exist. I'm using 2.063. If I new when tsize was implemented I 
would know if it is something I am doing wrong or if I'm just 
using a version where it isn't implemented.

const pure nothrow @property @safe size_t tsize();       (v 2.063)

or whatever.

P.S. note I added a fake version to it to demonstrate what the 
docs could look like... I know for some this post will be very 
difficult to understand... some will ask for a use case, some 
will call me a troll... Others will say it is not useful, and 
some will say it is too difficult to implement or will be too 
hard to maintain.