Release 5.4.0

* Minor improvements in Instruments (Default/Four), Sessions & Workflows (Four)
* New properties on Hosted Payment & Payment Link request classes (Default)
* Mapping for remaining APM types (Default/Four)
* Reuse SDK builder provided HTTP client builder for OAuth operations

gradle.properties

@@ -1,5 +1,5 @@
 group=com.checkout
-version=5.3.0
+version=5.4.0
 
 maven2_url=https://oss.sonatype.org/service/local/staging/deploy/maven2/
 snapshot_url=https://oss.sonatype.org/content/repositories/snapshots/