Bugfix/#90 title object

Bug fix

Summary

The Item Object now delivers a Title Object instead of a simple string as value for title in accordance to the TextAPI.

Furthermore, a normalization of the title string has been introduced.

Compliance to “Definition of Done”

• Unit tests passed
• Code reviewed
• Acceptance criteria met
• Functional tests passed
• Non-Functional requirements met
• Product Owner accepts the User Story

Closes

Closes #90 (closed).

Changelog

• I added a statement to the CHANGELOG.

Version number

• I bumped the version number in build.properties.

Readme and general docs

• I updated the README (if applicable) and kept the docs up to date.

/cc Mathias Göbel, Frank Schneider, Michelle Weidling

CHANGELOG.md

@@ -5,11 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+
 ## [2.5.1] - 2021-01-22
 
 ### Fixed
 
 - a broken path in the CI config
+- faulty implementation of the Item Object's title key: Provides now a Title Object according to the
+TextAPI specs instead of a string.
 
 ## [2.5.0] - 2021-01-14