Updating CHANGELOG to call out breaking type signature changes

jnape · jnape · commit 78efc11fdad4 · 2019-08-17T18:01:00.000-05:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,7 +5,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
 ## [Unreleased]
 ### Changed
-- `MonadT` is now witnessed by a parameter for better subtyping
+- ***Breaking Change***: `MonadT` is now witnessed by a parameter for better subtyping
 - `Alter` now merely requires an `Fn1` instead of an explicit `Effect`
 - `IO` now internally trampolines all forms of composition, including lazyZip;
    sequencing very large iterables of IO will work, if you have the heap, and
