Changes file for bug 29527

The previous commit introduces these changes:

Stop warning about undefined behavior in the probability distribution
tests. Float division by zero may technically be undefined behaviour in
C, but it's well-defined in IEEE 754.

Partial backport of 29298.

Closes ticket 29527; bugfix on 0.4.0.1-alpha.

changes/bug29527

+  o Minor features (circuit padding):
+    - Stop warning about undefined behavior in the probability distribution
+      tests. Float division by zero may technically be undefined behaviour in
+      C, but it's well-defined in IEEE 754. Partial backport of 29298.
+      Closes ticket 29527; bugfix on 0.4.0.1-alpha.