[RFC] Update Stage 4 description

[Nathan Sidwell]

On 1/9/19 4:02 AM, Jonathan Wakely wrote:

>> +extra care on not introducing new regressions - fixing bugs at all cost
> 
> ISTM that this should be either "at any cost" or "at all costs". The
> current wording can't make up its mind if it's singular or plural.

Agreed, as a native english speaker, 'at any cost' would be my preferred 
formulation.

> I also stumbled over "on not introducing" ... would that be better as
> "to not introduce"?

Either seems fine to me

nathan
-- 
Nathan Sidwell