diff --git a/.travis.yml b/.travis.yml
index cebad99..7820632 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,6 @@ otp_release:
   - 19.3
   - 18.3
   - 17.5
-  - R16B03-1
 before_script:
   - wget https://s3.amazonaws.com/rebar3/rebar3
   - chmod u+x rebar3
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58dea71..5e96b20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased][unreleased]
 
+## [0.2.1] - 30-01-2019
+### Fixed
+    * [Prevent warnings about non-documented type values](https://github.com/lrascao/raterl/pull/7)
+    * Deprecate R16 Travis tests
+
 ## [0.2.0] - 12-02-2018
 ### Fixed
     * Don't crash on boot upon lack of explicit env. config
diff --git a/pr2relnotes.sh b/pr2relnotes.sh
new file mode 100755
index 0000000..4202971
--- /dev/null
+++ b/pr2relnotes.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env sh
+
+if [ -z $1 ]
+then
+    echo "pr2relnotes.sh: prints list of pull requests merged since <tag>"
+    echo "  usage: $0 <tag> [pull-request-url (default: https://github.com/lrascao/raterl/pull/)]"
+    exit 0
+fi
+export url=${2:-"https://github.com/lrascao/raterl/pull/"}
+
+git log --merges --pretty=medium $1..HEAD | \
+awk -v url=$url '
+    # first line of a merge commit entry
+    /^commit / {mode="new"}
+
+    # merge commit default message
+    / +Merge pull request/ {
+        page_id=substr($4, 2, length($4)-1);
+        mode="started";
+        next;
+    }
+
+    # line of content including title
+    mode=="started" && /    [^ ]+/ {
+        print "- [" substr($0, 5) "](" url page_id ")"; mode="done"
+    }'
diff --git a/src/raterl.app.src b/src/raterl.app.src
index 01cc4ac..2e39013 100644
--- a/src/raterl.app.src
+++ b/src/raterl.app.src
@@ -1,6 +1,6 @@
 {application, raterl,
  [{description, "Erlang flow control"},
-  {vsn, "0.2.0"},
+  {vsn, "0.2.1"},
   {registered, []},
   {mod, { raterl_app, []}},
   {applications,
diff --git a/src/raterl_queue.erl b/src/raterl_queue.erl
index 6572392..a8607d8 100644
--- a/src/raterl_queue.erl
+++ b/src/raterl_queue.erl
@@ -49,7 +49,7 @@
 -record(state, {
           name :: atom(),
           regulator :: proplists:proplist(),
-          timer_ref :: reference()
+          timer_ref :: undefined | reference()
          }).
 
 %%====================================================================