bump version to 0.19.1
bump version to 0.19.1

bgruening/gemini,arq5x/gemini,bgruening/gemini,udp3f/gemini,arq5x/gemini,udp3f/gemini,udp3f/gemini,bgruening/gemini,arq5x/gemini,udp3f/gemini,bgruening/gemini,arq5x/gemini