Regenerate formatter config and gitignore with the latest Elixir

Author: r8

.formatter.exs

@@ -1,3 +1,4 @@
+# Used by "mix format"
 [
-  inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}"]
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
 ]

.gitignore

@@ -1,14 +1,14 @@
 # The directory Mix will write compiled artifacts to.
-/_build
+/_build/
 
 # If you run "mix test --cover", coverage assets end up here.
-/cover
+/cover/
 
 # The directory Mix downloads your dependencies sources to.
-/deps
+/deps/
 
-# Where 3rd-party dependencies like ExDoc output generated docs.
-/doc
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
 
 # Ignore .fetch files in case you like to edit your project deps locally.
 /.fetch
@@ -19,5 +19,11 @@ erl_crash.dump
 # Also ignore archive artifacts (built via "mix archive.build").
 *.ez
 
+# Ignore package tarball (built via "mix hex.build").
+oembed-*.tar
+
+# Temporary files, for example, from tests.
+/tmp/
+
 # Ignore Mix lock file
 mix.lock