v1.18.0

Added

• Added support for translation memories in text translation via
  TranslateTextOptions::TRANSLATION_MEMORY_ID and
  TranslateTextOptions::TRANSLATION_MEMORY_THRESHOLD.
• Added listTranslationMemories() method to the DeepLClient class for
  listing available translation memories.
• Added new model class TranslationMemoryInfo to represent translation memory data.

Fixed

• Set explicit image for gitlab release CI job to avoid missing $HOME issues.