-r requirements.txt
mock
nose
sure==1.2.24
coverage
flake8==3.5.0
freezegun
flask
boto>=2.45.0
boto3>=1.4.4
botocore>=1.8.36
six>=1.9
prompt-toolkit==1.0.14
click==6.7
inflection==0.3.1
lxml==4.0.0
beautifulsoup4==4.6.0

-r requirements.txt
mock
nose
sure==1.4.11
coverage
flake8==3.5.0
freezegun
flask
boto>=2.45.0
boto3>=1.4.4
botocore>=1.8.36
six>=1.9
prompt-toolkit==1.0.14
click==6.7
inflection==0.3.1
lxml==4.2.3
beautifulsoup4==4.6.0

Update lxml and sure for Python 3.7 compatibility
Update lxml and sure for Python 3.7 compatibility
