diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..deec4bd
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "tasks/release"]
+	path = tasks/release
+	url = https://github.com/aws/aws-sdk-ruby-release-tools.git
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 96a2ef6..141bb2d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 Unreleased Changes
 ------------------
 
+* Support implicitly convertible objects/duck-type values responding to `to_hash` and `to_ary`.
+
+  [See related GitHub pull request #51](https://github.com/jmespath/jmespath.rb/pull/51).
+
 1.4.0 (2018-04-04)
 ------------------
 
diff --git a/tasks/changelog.rake b/tasks/changelog.rake
deleted file mode 100644
index aa3afff..0000000
--- a/tasks/changelog.rake
+++ /dev/null
@@ -1,36 +0,0 @@
-task 'changelog:version' do
-  # replaces "Next Release (TBD)" in the CHANGELOG with a version and date
-  changelog = File.open('CHANGELOG.md', 'r', encoding: 'UTF-8') { |f| f.read }
-  changelog = changelog.lines
-  changelog[0] = "#{$VERSION} (#{Time.now.strftime('%Y-%m-%d')})\n"
-  changelog = changelog.join
-  File.open('CHANGELOG.md', 'w', encoding: 'UTF-8') { |f| f.write(changelog) }
-  sh("git add CHANGELOG.md")
-end
-
-task 'changelog:next_release' do
-  # inserts a "Next Release (TDB)" section at the top of the CHANGELOG
-  lines = []
-  lines << "Unreleased Changes\n"
-  lines << "------------------\n"
-  lines << "\n"
-  changelog = File.open('CHANGELOG.md', 'r', encoding: 'UTF-8') { |f| f.read }
-  changelog = lines.join + changelog
-  File.open('CHANGELOG.md', 'w', encoding: 'UTF-8') { |f| f.write(changelog) }
-  sh("git add CHANGELOG.md")
-  sh("git commit -m 'Added next release section to the changelog.'")
-end
-
-task 'changelog:latest' do
-  # Returns the contents of the most recent CHANGELOG section
-  changelog = File.open('CHANGELOG.md', 'r', encoding: 'UTF-8') { |f| f.read }
-  lines = []
-  changelog.lines[3..-1].each do |line|
-    if line.match(/^\d+\.\d+\.\d+/)
-      break
-    else
-      lines << line
-    end
-  end
-  puts lines[0..-2].join
-end
diff --git a/tasks/docs.rake b/tasks/docs.rake
deleted file mode 100644
index 522ca2d..0000000
--- a/tasks/docs.rake
+++ /dev/null
@@ -1,14 +0,0 @@
-task 'docs:clobber' do
-  rm_rf ".yardoc"
-  rm_rf "docs"
-end
-
-desc "Generates docs.zip"
-task 'docs:zip' => :docs do
-  sh("zip -9 -r -q docs.zip docs/")
-end
-
-desc "Generate the API documentation."
-task :docs => ['docs:clobber'] do
-  sh({"SOURCE" => "1"}, "bundle exec yard")
-end
diff --git a/tasks/gem.rake b/tasks/gem.rake
deleted file mode 100644
index 0c3129c..0000000
--- a/tasks/gem.rake
+++ /dev/null
@@ -1,8 +0,0 @@
-desc 'Builds the gem'
-task 'gem:build' do
-  sh("gem build jmespath.gemspec")
-end
-
-task 'gem:push' do
-  sh("gem push jmespath-#{$VERSION}.gem")
-end
diff --git a/tasks/github.rake b/tasks/github.rake
deleted file mode 100644
index eaba366..0000000
--- a/tasks/github.rake
+++ /dev/null
@@ -1,29 +0,0 @@
-task 'github:require-access-token' do
-  unless $GITHUB_ACCESS_TOKEN
-    warn("you must export JMESPATH_GITHUB_ACCESS_TOKEN")
-    exit
-  end
-end
-
-task 'github:release' do
-  require 'octokit'
-
-  gh = Octokit::Client.new(access_token: $GITHUB_ACCESS_TOKEN)
-
-  repo = 'trevorrowe/jmespath.rb'
-  tag_ref_sha = `git show-ref v#{$VERSION}`.split(' ').first
-  tag = gh.tag(repo, tag_ref_sha)
-
-  release = gh.create_release(repo, "v#{$VERSION}", {
-    name: 'Release v' + $VERSION + ' - ' + tag.tagger.date.strftime('%Y-%m-%d'),
-    body: tag.message.lines[2..-1].join,
-    prerelease: $VERSION.match('rc') ? true : false,
-  })
-
-  gh.upload_asset(release.url, 'docs.zip',
-    :content_type => 'application/octet-stream')
-
-  gh.upload_asset(release.url, "jmespath-#{$VERSION}.gem",
-    :content_type => 'application/octet-stream')
-
-end
diff --git a/tasks/release b/tasks/release
new file mode 160000
index 0000000..bcf3a74
--- /dev/null
+++ b/tasks/release
@@ -0,0 +1 @@
+Subproject commit bcf3a7470dd7b39af5a35a2e6ac99fc6587d1a00
diff --git a/tasks/release.rake b/tasks/release.rake
deleted file mode 100644
index d3c1f61..0000000
--- a/tasks/release.rake
+++ /dev/null
@@ -1,42 +0,0 @@
-task 'release:require-version' do
-  unless ENV['VERSION']
-    warn("usage: VERSION=x.y.z rake release")
-    exit
-  end
-end
-
-task 'release:bump-version' do
-  sh("echo '#{$VERSION}' > VERSION")
-  path = 'lib/jmespath/version.rb'
-  file = File.read(path)
-  file = file.gsub(/VERSION = '.+?'/, "VERSION = '#{$VERSION}'")
-  File.open(path, 'w') { |f| f.write(file) }
-  sh("git add #{path}")
-  sh("git add VERSION")
-end
-
-task 'release:stage' => [
-  'release:require-version',
-  'github:require-access-token',
-  'git:require-clean-workspace',
-  'test:unit',
-  'test:compliance',
-  'changelog:version',
-  'release:bump-version',
-  'git:tag',
-  'gem:build',
-  'docs:zip',
-]
-
-task 'release:publish' => [
-  'git:push',
-  'gem:push',
-  'github:release',
-]
-
-task 'release:cleanup' => [
-  'changelog:next_release',
-]
-
-desc "Public release"
-task :release => ['release:stage', 'release:publish', 'release:cleanup']