[tpm] Source of when Perl features added

[Indy Singh]

Hello folks,

Anybody have any idea where one can find a list of what Perl features 
were added in what release?

I am not interested in ancient versions just ones that one might run 
into in a production environment.  Also not looking for every bug or 
feature that was added in every release just the major items.

Some of the specific things I am interested in are:
What release introduced 'use warnings'?
What release introduced the 'our' variable declaration?
What release allowed calls to undeclared user subs without a leading &.

Indy Singh
IndigoSTAR Software -- www.indigostar.com