add aa_length to VEP annotation
add aa_length to VEP annotation

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