rollama 0.3.0

• adds option to cache responses
• query now supports logprobs output
• make it possible to supply several questions at once
• add authentication vignette
• implemented structured outputs (including new vignette)
• synced package with Ollama API changes
• adds list_running_models()
• updated chat() and query()
• update parameters in embed_text()
• update parameters and output in show_model()
• rewrote progress and answer streaming
• bug fixes