Prepare for release

Author: dilyand

CHANGELOG

@@ -1,3 +1,17 @@
+Version 0.4.0 (2019-09-18)
+--------------------------
+Fix typo in user ID field name for mobile events (#57)
+Add option to configure Indicative's API URI via environment variable (#58)
+Exclude null values from being included in Indicative event payload (#63)
+Refactor unit tests to use mutable Specification (#59)
+Make testing for a user identifier a separate function that can be unit-tested (#62)
+Bump sbt to 1.3.0 (#64)
+Bump sbt-tpolecat to 0.1.8 (#65)
+Bump amazon-kinesis-client to 1.11.2 (#66)
+Bump aws-lambda-java-events to 2.2.7 (#67)
+Bump cats-effect to 1.4.0 (#68)
+Bump version to 0.4.0 (#75)
+
 Version 0.3.0 (2019-05-13)
 --------------------------
 Limit fields and contexts (#23)

README.md

@@ -4,7 +4,7 @@
 [![License][license-image]][license]
 
 Snowplow Indicative Relay is an AWS Lambda function that reads Snowplow enriched events
-from a Kinesis Stream and transfers them to Indicative. It processes events in batches, which
+from a Kinesis Stream and transfers them to Indicative. It processes events in batches, whose
 size depends on your AWS Lambda configuration.
 
 Detailed setup instructions, as well as more technical information, are provided on the [wiki page][wiki-page].
@@ -20,7 +20,7 @@ Unless required by applicable law or agreed to in writing, software distributed
 [travis-image]: https://travis-ci.org/snowplow-incubator/snowplow-indicative-relay.svg?branch=master
 [travis]: https://travis-ci.org/snowplow-incubator/snowplow-indicative-relay
 
-[release-image]: https://img.shields.io/badge/release-0.3.0-orange.svg?style=flat
+[release-image]: https://img.shields.io/badge/release-0.4.0-orange.svg?style=flat
 [release]: https://github.com/snowplow-incubator/snowplow-indicative-relay/releases
 
 [license-image]: http://img.shields.io/badge/license-Apache--2-blue.svg?style=flat