Support GHC 8.10.

.gitignore

@@ -1,8 +1,6 @@
 elm-stuff
 dist
+dist-newstyle
 cabal-dev
-.cabal-sandbox/
-cabal.sandbox.config
 .DS_Store
 *~
-travis.log

elm.cabal

@@ -203,12 +203,12 @@ Executable elm
         Paths_elm
 
     Build-depends:
-        ansi-terminal >= 0.8 && < 0.9,
+        ansi-terminal >= 0.11 && < 0.12,
         ansi-wl-pprint >= 0.6.8 && < 0.7,
         base >=4.11 && <5,
         binary >= 0.8 && < 0.9,
-        bytestring >= 0.9 && < 0.11,
-        containers >= 0.5.8.2 && < 0.6,
+        bytestring >= 0.10 && < 0.11,
+        containers >= 0.6 && < 0.7,
         directory >= 1.2.3.0 && < 2.0,
         edit-distance >= 0.2 && < 0.3,
         file-embed,
@@ -217,12 +217,12 @@ Executable elm
         ghc-prim >= 0.5.2,
         haskeline,
         HTTP >= 4000.2.5 && < 4000.4,
-        http-client >= 0.6 && < 0.7,
+        http-client >= 0.7 && < 0.8,
         http-client-tls >= 0.3 && < 0.4,
         http-types >= 0.12 && < 1.0,
         language-glsl >= 0.3,
         mtl >= 2.2.1 && < 3,
-        network >= 2.4 && < 2.7,
+        network >= 2.4 && < 2.8,
         parsec,
         process,
         raw-strings-qq,