Korrektur von Abstürzen bei Verwendung im Android-System.

Aufgrund der veralteten Apache-Bibliothek

Support endpoints for handling search synonyms

Support RecommendNextItems endpoint

Support SearchItems endpoint

Update com.fasterxml.jackson.core due vulnerabilities

Update com.fasterxml.jackson.core due to vulnerability CVE-2019-12086

Add logic parameter to recommendation endpoints. Use HTTPS as default.

additionalData for interactions, returnAbGroup for recommendation end…

…points

Update com.fasterxml.jackson.core to 2.9.8 due to vulnerabilities 2.9.7

Update com.fasterxml.jackson.core to 2.9.7, as 2.8.1 is vulnerable to C…

…VE-2018-7489 and CVE-2017-7525