Merge branch 'develop' into task/douglashall/TLT-1166/support_multiple_launches

Conflicts:
	django_auth_lti/verification.py
	setup.py

django_auth_lti/verification.py

@@ -8,11 +8,6 @@ def is_allowed(request, allowed_roles, raise_exception):
         allowed = (allowed_roles, )
     else:
         allowed = allowed_roles
-    
-    if not request.LTI:
-        # If this is raised, then likely the project doesn't have
-        # the correct settings or is being run outside of an lti context
-        raise ImproperlyConfigured("Missing LTI launch parameters")
 
     user_roles = request.LTI.get('roles', [])
     is_user_allowed = set(allowed) & set(user_roles)
@@ -21,3 +16,8 @@ def is_allowed(request, allowed_roles, raise_exception):
         raise PermissionDenied
     
     return is_user_allowed
+
+
+def has_lti_roles(request, roles):
+    user_roles = request.LTI.get('roles', [])
+    return bool(set(user_roles) & set(roles))

setup.py

@@ -8,7 +8,7 @@ os.chdir(os.path.normpath(os.path.join(os.path.abspath(__file__), os.pardir)))
 
 setup(
     name='django-auth-lti',
-    version='2.0',
+    version='1.2.0',
     packages=['django_auth_lti'],
     include_package_data=True,
     license='TBD License',  # example license