Release v5.3.0 (#3859)

* Update grammars

* Update haskell scopes to match updated grammar

* Bump version to 5.3.0

grammars.yml

@@ -403,6 +403,7 @@ vendor/grammars/language-haml:
 - text.haml
 - text.hamlc
 vendor/grammars/language-haskell:
+- annotation.liquidhaskell.haskell
 - hint.haskell
 - hint.message.haskell
 - hint.type.haskell
@@ -410,6 +411,7 @@ vendor/grammars/language-haskell:
 - source.cabal
 - source.haskell
 - source.hsc2hs
+- source.hsig
 - text.tex.latex.haskell
 vendor/grammars/language-inform7:
 - source.inform7

lib/linguist/version.rb

@@ -1,3 +1,3 @@
 module Linguist
-  VERSION = "5.2.0"
+  VERSION = "5.3.0"
 end