Better error messages - from reddit

[Nicholas Wilson]

On Tuesday, 12 March 2019 at 06:33:55 UTC, Seb wrote:
> On Tuesday, 12 March 2019 at 00:40:32 UTC, Nicholas Wilson 
> wrote:
>> one major thing I think will help is to have tools to 
>> auto-update the test suite, I hate how over prescriptive it is.
>
> ./test/run.d AUTO_UPDATE=1
>
> (works with the Makefile too)

Thanks, could you add that to the dlang bot's message? I'm going 
to forget that otherwise.