0.3.4.6-rc ChangeLog omits bug26876

At arma's suggestion, we should check the 0.3.4 ChangeLog for omissions.

It looks like bf33ddd291 deleted changes/bug26876 but 59e813f5f9 didn't actually incorporate its contents into the ChangeLog. We should fix this. We should probably check for other omissions of this sort, too.

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