could I get added to the mailing list?

is there a mail archive I can look at for the discussion around:

* Tue Feb 03 2015 Devrim Gündüz <devrim(at)gunduz(dot)org> - 9.4.1-1PGDG
- Update to 9.4.1, per changes described at:
http://www.postgresql.org/docs/9.4/static/release-9-4-1.html

*- Improve .bash_profile, and let users specify their own environmental
settings by sourcing an external file, called ~/.pgsql_profile. Per
request from various users, and final suggestion from Martin Gudmundsson.*

i'm trying to understand more about this change since it, seems to have
unpleasant results during a yum update when there are multiple server
versions installed on a machine at the same time.

that it wiped out the ~postgres/.bash_profile that existed too, which
caught some of my peers by surprise.

I realize this was 'a long time' and they should have raised the concern
sooner but i'm just trying to educate myself on it some more first.

-Mark