Update pypi package versions (requirements.txt)

tildes/requirements.txt

@@ -7,7 +7,7 @@ astroid==1.5.3
 atomicwrites==1.1.5
 attrs==18.1.0
 backcall==0.1.0
-beautifulsoup4==4.6.0
+beautifulsoup4==4.6.3
 bleach==2.1.3
 boussole==1.2.3
 certifi==2018.4.16
@@ -23,7 +23,7 @@ gunicorn==19.9.0
 html5lib==1.0.1
 hupper==1.3
 idna==2.7
-ipython==6.4.0
+ipython==6.5.0
 ipython-genutils==0.2.0
 isort==4.3.4
 jedi==0.12.1
@@ -32,9 +32,9 @@ lazy-object-proxy==1.3.1
 libsass==0.14.5
 Mako==1.0.7
 MarkupSafe==1.0
-marshmallow==2.15.3
+marshmallow==2.15.4
 mccabe==0.6.1
-more-itertools==4.2.0
+more-itertools==4.3.0
 mypy==0.620
 mypy-extensions==0.3.0
 parso==0.3.1
@@ -44,8 +44,8 @@ pexpect==4.6.0
 pickleshare==0.7.4
 plaster==1.0
 plaster-pastedeploy==0.6
-pluggy==0.6.0
-prometheus-client==0.3.0
+pluggy==0.7.1
+prometheus-client==0.3.1
 prompt-toolkit==1.0.15
 psycopg2==2.7.5
 ptyprocess==0.6.0
@@ -68,7 +68,7 @@ pyramid-mako==1.0.2
 pyramid-session-redis==1.4.1
 pyramid-tm==2.2
 pyramid-webassets==0.9
-pytest==3.6.3
+pytest==3.7.1
 pytest-mock==1.10.0
 python-dateutil==2.7.3
 python-editor==1.0.3
@@ -82,7 +82,7 @@ six==1.11.0
 snowballstemmer==1.2.1
 SQLAlchemy==1.2.10
 SQLAlchemy-Utils==0.33.3
-stripe==2.0.1
+stripe==2.4.0
 testing.common.database==2.0.3
 testing.redis==1.1.1
 traitlets==4.3.2