binding: Updates Jinja2 from 2.7.1 to 2.8.

third_party/jinja2/nodes.py

Index: third_party/jinja2/nodes.py
diff --git a/third_party/jinja2/nodes.py b/third_party/jinja2/nodes.py
index c5697e6b5ec3737a0e43656c883340656c4544d3..d32046ce5c3c5c068a2b25d5e8ad14423c7cf389 100644
--- a/third_party/jinja2/nodes.py
+++ b/third_party/jinja2/nodes.py
@@ -12,16 +12,16 @@
     :copyright: (c) 2010 by the Jinja Team.
     :license: BSD, see LICENSE for more details.
 """
+import types
 import operator
 
 from collections import deque
 from jinja2.utils import Markup
-from jinja2._compat import next, izip, with_metaclass, text_type, \
-     method_type, function_type
+from jinja2._compat import izip, with_metaclass, text_type
 
 
 #: the types we support for context functions
-_context_function_types = (function_type, method_type)
+_context_function_types = (types.FunctionType, types.MethodType)
 
 
 _binop_to_func = {
@@ -347,6 +347,11 @@ class Assign(Stmt):
     fields = ('target', 'node')
 
 
+class AssignBlock(Stmt):
+    """Assigns a block to a target."""
+    fields = ('target', 'body')
+
+
 class Expr(Node):
     """Baseclass for all expressions."""
     abstract = True
@@ -746,7 +751,7 @@ class Add(BinExpr):
 
 
 class Sub(BinExpr):
-    """Substract the right from the left node."""
+    """Subtract the right from the left node."""
     operator = '-'