bump to version 0.3.0b
bump to version 0.3.0b

heuermh/gemini,bpow/gemini,arq5x/gemini,heuermh/gemini,xuzetan/gemini,udp3f/gemini,bw2/gemini,brentp/gemini,heuermh/gemini,heuermh/gemini,bpow/gemini,bpow/gemini,bw2/gemini,arq5x/gemini,arq5x/gemini,udp3f/gemini,bgruening/gemini,udp3f/gemini,bw2/gemini,bgruening/gemini,brentp/gemini,bw2/gemini,xuzetan/gemini,bgruening/gemini,brentp/gemini,bpow/gemini,brentp/gemini,udp3f/gemini,bgruening/gemini,arq5x/gemini,xuzetan/gemini,xuzetan/gemini