Add Tweag post about streaming linear types

Author: tfausak

content/issues/112.markdown

@@ -1,4 +1,4 @@
-<!-- 2018-06-21 -->
+<!-- 2018-06-21 unpublished -->
 
 Welcome to another issue of Haskell Weekly!
 [Haskell](https://haskell-lang.org) is a safe, purely functional programming language with a fast, concurrent runtime.
@@ -13,6 +13,10 @@ Open an issue or pull request [on GitHub](https://github.com/haskellweekly/haske
 
     > We found existing plain text accounting tools unsatisfactory, so we developed Transity. It models financial flows in terms of transactions and not debited / credited accounts.
 
+-   [Streaming with linear types](https://www.tweag.io/posts/2018-06-21-linear-streams.html)
+
+    > In this post we delve further in that direction by considering linear types and uncover their potential to have the compiler enforce more properties statically.
+
 -   [Deprecating the Haskell markdown library](https://www.snoyman.com/blog/2018/06/deprecating-haskell-markdown-library)
 
     > I ended up creating my own library called markdown (inventive name, I know). Today, I'm considering deprecating this library, for a number of reasons: