bump the c lazy linker version. It was forgotten in a past PR.

theano/gof/lazylinker_c.c

@@ -1024,7 +1024,7 @@ static PyTypeObject lazylinker_ext_CLazyLinkerType = {
 
 static PyObject * get_version(PyObject *dummy, PyObject *args)
 {
-  PyObject *result = PyFloat_FromDouble(0.20);
+  PyObject *result = PyFloat_FromDouble(0.21);
   return result;
 }
 

theano/gof/lazylinker_c.py

@@ -14,7 +14,8 @@ from theano.gof import cmodule
 _logger = logging.getLogger('theano.gof.lazylinker_c')
 
 force_compile = False
-version = 0.20  # must match constant returned in function get_version()
+version = 0.21  # must match constant returned in function get_version()
+
 
 def try_import():
     global lazylinker_ext
@@ -22,6 +23,7 @@ def try_import():
     import lazylinker_ext
     del sys.path[0]
 
+
 def try_reload():
     sys.path[0:0] = [config.compiledir]
     reload(lazylinker_ext)