Updating Python Requirements

requirements/edx/base.txt

@@ -230,7 +230,7 @@ sorl-thumbnail==12.3
 sortedcontainers==2.1.0
 soupsieve==1.9.2          # via beautifulsoup4
 sqlparse==0.3.0
-staff-graded-xblock==0.2
+staff-graded-xblock==0.3
 stevedore==1.30.1
 git+https://github.com/edx/super-csv@1a9dcc89eb65c3ed434b509b84062f8fcabd901b#egg=super-csv==0.2
 sympy==1.4

requirements/edx/development.txt

@@ -305,7 +305,7 @@ soupsieve==1.9.2
 sphinx==1.8.5
 sphinxcontrib-websupport==1.1.2  # via sphinx
 sqlparse==0.3.0
-staff-graded-xblock==0.2
+staff-graded-xblock==0.3
 stevedore==1.30.1
 git+https://github.com/edx/super-csv@1a9dcc89eb65c3ed434b509b84062f8fcabd901b#egg=super-csv==0.2
 sympy==1.4
@@ -314,7 +314,7 @@ text-unidecode==1.2
 tincan==0.0.5
 toml==0.10.0
 tox-battery==0.5.1
-tox==3.13.1
+tox==3.13.2
 transifex-client==0.13.6
 typing==3.7.4
 unicodecsv==0.14.1

requirements/edx/testing.txt

@@ -292,7 +292,7 @@ sorl-thumbnail==12.3
 sortedcontainers==2.1.0
 soupsieve==1.9.2
 sqlparse==0.3.0
-staff-graded-xblock==0.2
+staff-graded-xblock==0.3
 stevedore==1.30.1
 git+https://github.com/edx/super-csv@1a9dcc89eb65c3ed434b509b84062f8fcabd901b#egg=super-csv==0.2
 sympy==1.4
@@ -301,7 +301,7 @@ text-unidecode==1.2       # via faker
 tincan==0.0.5
 toml==0.10.0              # via tox
 tox-battery==0.5.1
-tox==3.13.1
+tox==3.13.2
 transifex-client==0.13.6
 typing==3.7.4             # via flake8
 unicodecsv==0.14.1