Update CHANGELOG

Author: José Valim

CHANGELOG.md

@@ -93,7 +93,7 @@ and is using Erlang 17.1, remember to update to at least Erlang 17.3.
   * [ExUnit] Provide built-in log capturing functionality
   * [ExUnit] Allow `assert_receive_timeout` and `refute_receive_timeout` to be configured in the ExUnit application
   * [ExUnit] Allow tests to be skipped with `@tag :skip` or `@tag skip: "reason"`
-  * [ExUnit] Add tests without implementation (missing the do block) which automatically fail
+  * [ExUnit] Add tests without implementation (missing the do block) which automatically fail. Such tests are also automatically tagged as `:not_implemented`, allowing them to be skipped
   * [ExUnit] Increase by default stacktrace depth to 20 (this value is also configurable)
 
 #### IEx

lib/mix/test/mix/cli_test.exs

@@ -63,7 +63,7 @@ defmodule Mix.CLITest do
   test "tasks with slashes in them raise a NoTaskError right away" do
     in_fixture "no_mixfile", fn ->
       contents = mix ~w[my/task]
-      assert contents =~ "** (Mix) The task my/task could not be found"
+      assert contents =~ "** (Mix) The task \"my/task\" could not be found"
     end
   end