upgrade almost everything

.travis.yml

@@ -1,6 +1,6 @@
 language: python
 python:
-- '2.7'
+- '3.6'
 before_install:
 - pip install -U pip
 - pip install -r requirements.txt

requirements.txt

@@ -1,21 +1,20 @@
-Flask==0.10.1
-Jinja2==2.8
-MarkupSafe==0.23
-Werkzeug==0.11.9
+Flask==1.0.2
+Flask-Caching==1.4.0
+Flask-SSLify==0.1.5
+Jinja2==2.10
+MarkupSafe==1.0
+Werkzeug==0.14.1
 cssmin==0.2.0
-grymt==1.4
-cffi==1.6.0
+grymt==1.5
+cryptography==2.3.1
+cffi==1.11.5
 itsdangerous==0.24
-jsmin==2.2.1
-pylibmc==1.5.1
-python-memcached==1.57
-requests==2.10.0
-wsgiref==0.1.2
-Flask-Cache==0.13.1
-Flask-Heroku-Cacheify==1.5
-Flask-SSLify==0.1.5
-gunicorn==19.4.5
+jsmin==2.2.2
+pylibmc==1.5.2
+python-memcached==1.59
+requests==2.19.1
+gunicorn==19.9.0
 whitenoise==2.0.6
-ndg-httpsclient==0.4.0
-pyOpenSSL==16.0.0
-pyasn1==0.1.9
+ndg-httpsclient==0.5.1
+pyOpenSSL==18.0.0
+pyasn1==0.4.4