Update manpages and auto-completion

doc/man/restic-diff.1

@@ -49,6 +49,7 @@ Exit status is 0 if the command was successful.
 Exit status is 1 if there was any error.
 Exit status is 10 if the repository does not exist.
 Exit status is 11 if the repository is already locked.
+Exit status is 12 if the password is incorrect.
 
 
 .SH OPTIONS
@@ -150,6 +151,10 @@ Exit status is 11 if the repository is already locked.
 \fB--retry-lock\fP=0s
 	retry to lock the repository if it is already locked, takes a value like 5m or 2h (default: no retries)
 
+.PP
+\fB--stuck-request-timeout\fP=5m0s
+	\fBduration\fR after which to retry stuck requests
+
 .PP
 \fB--tls-client-cert\fP=""
 	path to a \fBfile\fR containing PEM encoded TLS client certificate and private key (default: $RESTIC_TLS_CLIENT_CERT)