v1.5.0

This update add Gemini Models support for translation.

New Features:

• Support Gemini as translation engine.

Other Changes:

• Extract the check_format section into a standalone validators.py module.
• Add stop_sequences support for Chatbot.
• Use stop sequences when building Context.
• Also remove generated .wav files from videos if clear_temp=True.
• Minor improvements on Context Reviewer prompt.