Dlang IRC has moved to Libera Chat

[Iain Buclaw]

Hi all,

For over 18 years, we have used Freenode as our home for the 
Dlang community on IRC.  Recent events, however, have made it 
unclear whether we will be able to retain any presence on 
Freenode at all.

So it has been decided, as of 
[2021/05/27](https://github.com/dlang/dlang.org/pull/3012), our 
official IRC presence will now be on [Libera 
Chat](https://libera.chat/), with [OFTC](https://www.oftc.net/) 
as a secondary home.  The Freenode channel has now been marked as 
unofficial, and we invite everyone to join us in #d on Libera 
Chat.

With that said, I am happy to announce that the Dlang project has 
been registered with Libera Chat. This grants us claim to the #d 
and #dlang related channels, as well as setting up dlang cloaks.  
If you are a contributor to any project under the umbrella of 
dlang (including gdc and ldc), and would like to request a cloak, 
then please reach out to us.

The new channels on libera are:
- `#d`: Dlang community channel
- `#d-feed`: DFeed bot postings of all dlang-related posts, 
issues, and pull requests
- `#d-gdc`: GDC development channel
- `#dlang`: Dlang development channel

See you all there!

-----------------------------------
**THIS IS NOT A DISCUSSION THREAD**

Please discuss the announcement in the [general forum 
thread](https://forum.dlang.org/post/ecmxtpulswayuzjrgyqh@forum.dlang.org).