all: Reformat C and Python source code with tools/codeformat.py.

This is run with uncrustify 0.70.1, and black 19.10b0.

examples/natmod/features2/test.py

@@ -2,20 +2,22 @@
 
 import array
 
+
 def isclose(a, b):
     return abs(a - b) < 1e-3
 
+
 def test():
     tests = [
         isclose(add(0.1, 0.2), 0.3),
         isclose(add_f(0.1, 0.2), 0.3),
     ]
 
-    ar = array.array('f', [1, 2, 3.5])
+    ar = array.array("f", [1, 2, 3.5])
     productf(ar)
     tests.append(isclose(ar[0], 7))
 
-    if 'add_d' in globals():
+    if "add_d" in globals():
         tests.append(isclose(add_d(0.1, 0.2), 0.3))
 
     print(tests)
@@ -23,4 +25,5 @@ def test():
     if not all(tests):
         raise SystemExit(1)
 
+
 test()