Fix bug #1520914. Starting in 2.4, time.strftime() began to check the bounds
of values in the time tuple passed in. Unfortunately people came to rely on
undocumented behaviour of setting unneeded values to 0, regardless of if it was
within the valid range. Now those values force the value internally to the
minimum value when 0 is passed in.
diff --git a/Doc/lib/libtime.tex b/Doc/lib/libtime.tex
index b39b650..0e83400 100644
--- a/Doc/lib/libtime.tex
+++ b/Doc/lib/libtime.tex
@@ -226,6 +226,8 @@
\versionchanged[Allowed \var{t} to be omitted]{2.1}
\versionchanged[\exception{ValueError} raised if a field in \var{t} is
out of range]{2.4}
+\versionchanged[0 is now a legal argument for any position in the time tuple;
+if it is normally illegal the value is forced to a correct one.]{2.5}
The following directives can be embedded in the \var{format} string.