merge v1.16.4

* 1-16-stable:
  Version 1.16.4 with changelog
  Auto merge of #6668 - eregon:fix-encoding-spec-from-6661, r=deivid-rodriguez
  Add encoding magic comment to gemfile spec
  Auto merge of #6662 - bundler:indirect/update-authors, r=colby-swandale
  Auto merge of #6650 - greysteil:dont-mutate-original-trees, r=segiddins
  Auto merge of #6661 - eregon:consistent-encoding-for-reading-files, r=deivid-rodriguez
  Auto merge of #6652 - bundler:seg-molinillo-0.6.6, r=segiddins
  Auto merge of #6645 - bundler:colby/require-etc, r=colby-swandale
  Auto merge of #6636 - ojab:1-16-stable, r=indirect
  Auto merge of #6624 - bundler:no-document, r=colby-swandale
  Auto merge of #6621 - ralphbolo:patch-1, r=segiddins
  Auto merge of #6613 - kemitchell:mention-show-sorts-in-doc, r=colby-swandale
  Auto merge of #6570 - akihiro17:prerelease-dependency, r=segiddins
  Auto merge of #6568 - greysteil:conservative-groups, r=segiddins

CHANGELOG.md

@@ -1,3 +1,24 @@
+## 1.16.4 (2017-08-17)
+
+Changes:
+
+  - Welcome new members to the Bundler core team (@indirect)
+  - Don't mutate original error trees when determining version_conflict_message (@greysteil)
+  - Update vendored Molinillo to 0.6.6 (@segiddins)
+
+Bugfixes:
+
+  - Reword bundle update regression message to be more clear to the user when a gem's version is downgraded ([#6584](https://github.com/bundler/bundler/issues/6584), @ralphbolo)
+  - Respect --conservative flag when updating a dependency group ([#6560](https://github.com/bundler/bundler/issues/6560), @greysteil)
+  - Fix issue where a pre-release version was not being selected when it's specified in the Gemfile ([#6449](https://github.com/bundler/bundler/issues/6449), @akihiro17)
+  - Fix issue where `Etc` was not loaded when getting the user's home dir ([#6640](https://github.com/bundler/bundler/issues/6640), @colby-swandale)
+  - Use UTF-8 for reading files including Gemfile ([#6660](https://github.com/bundler/bundler/issues/6660), @eregon)
+  - Remove unnecessary `while` loop in path resolver helper (@ojab)
+
+Documentation:
+
+  - Document that `bundle show [--paths]` sorts results by name (@kemitchell)
+
 ## 1.16.3 (2018-07-17)
 
 Features:

spec/install/gemfile_spec.rb

@@ -1,3 +1,4 @@
+# encoding: utf-8
 # frozen_string_literal: true
 
 RSpec.describe "bundle install" do