Version 5.5.0-rc release (#116)

* Version 5.5.0-rc-v2.1-20.3.00 release

* Reverted not required changes?

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>
Co-authored-by: Dhaval Brahmbhatt <dhaval.brahmbhatt@dsa017178.docusignhq.com>

.travis.yml

@@ -5,9 +5,6 @@ language: php
 sudo: false
 dist: trusty
 php:
-    - 5.4
-    - 5.5
-    - 5.6
     - 7.0
-before_install: "travis_wait 30 composer install --ignore-platform-reqs"
+before_install: "composer install --ignore-platform-reqs"
 script: "cd test && phpunit UnitTests.php && phpunit OAuthTests.php"

CHANGELOG.md

@@ -3,6 +3,18 @@ All notable changes to this project will be documented in this file.
 
 See [DocuSign Support Center](https://support.docusign.com/en/releasenotes/) for Product Release Notes.
 
+## [5.5.0-rc] - eSignature API v2-20.3.00 - 2020-09-16
+### Changed
+
+*   Added support for version v2-20.3.00 of the DocuSign eSignature API.
+*   Updated the SDK release version.
+
+### Fixed
+
+* Fixed APIException Serialization issue
+    * [#83](https://github.com/docusign/docusign-php-client/issues/83) - DCM-3466
+    * [#103](https://github.com/docusign/docusign-php-client/issues/103) - DCM-4286
+
 ## [5.4.0] - eSignature API v2.1-20.2.02 - 2020-08-25
 ### Changed