add elixir libraries discord made

also add lilliput to the go section

internals.md

@@ -23,9 +23,22 @@ Technologies Discord uses to provide the service, gathered from
 ## Programming languages:
  - [Elixir](https://elixir-lang.org/) for any real time communication,
     [source](https://blog.discordapp.com/scaling-elixir-f9b8e1e7c29b).
+    - [ex\_hash\_ring](https://github.com/discordapp/ex_hash_ring)
+    - [manifold](https://github.com/discordapp/manifold)
+    - [fastglobal](https://github.com/discordapp/fastglobal)
+    - [semaphore](https://github.com/discordapp/semaphore)
+    - [instruments](https://github.com/discordapp/instruments)
+    - [deque](https://github.com/discordapp/deque)
+    - [Use of GenStage](https://blog.discordapp.com/how-discord-handles-push-request-bursts-of-over-a-million-per-minute-with-elixirs-genstage-8f899f0221b4)
  - [Python](https://www.python.org/) for HTTP/REST API,
     The best guesses to which framework are [Flask].
  - [Go](https://golang.org/) for the embed servers and one element of their logging(see [Punt])
+ - [Go](https://golang.org):
+    - The embed servers
+    - [Punt]
+    - [Lilliput](https://github.com/discordapp/lilliput), which is a main part
+        of their media proxy. Lillput is also written in C++.
+        [source!](https://blog.discordapp.com/how-discord-resizes-150-million-images-every-day-with-go-and-c-c9e98731c65d)
  - [Rust](https://www.rust-lang.org/) for many parts of the Discord Store, most commonly:
    - [Game SDK](https://discordapp.com/developers/docs/game-sdk/sdk-starter-guide),
         to make Discord integrations for any game.