Added future package to the requirements.txt
Added future package to the requirements.txt

ssadedin/seqr,macarthur-lab/seqr,macarthur-lab/seqr,ssadedin/seqr,ssadedin/seqr,ssadedin/seqr,ssadedin/seqr,macarthur-lab/seqr,macarthur-lab/seqr,macarthur-lab/seqr