Export (~) from Data.Type.Equality (#18862)wip/eqtycon-rn

* Users can define their own (~) type operator
* Haddock can display documentation for the built-in (~)
* New transitional warnings implemented:
    -Wtype-equality-out-of-scope
    -Wtype-equality-requires-operators

Updates the haddock submodule.

1 files changed, 1 insertions, 0 deletions

diff --git a/libraries/base/Data/String.hs b/libraries/base/Data/String.hs
index 02a720f8e9..bd5d3d0edd 100644
--- a/libraries/base/Data/String.hs
+++ b/libraries/base/Data/String.hs
@@ -5,6 +5,7 @@
 {-# LANGUAGE StandaloneDeriving #-}
 {-# LANGUAGE Trustworthy #-}
 {-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE TypeOperators #-}
 
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