missing HexString documentation

[Seb]

On Thursday, 8 February 2018 at 00:55:28 UTC, Seb wrote:
> On Wednesday, 7 February 2018 at 15:41:37 UTC, Seb wrote:
>> On Wednesday, 7 February 2018 at 15:25:05 UTC, Steven 
>> Schveighoffer wrote:
>>> [...]
>>
>> They are deprecated:
>>
>> https://dlang.org/changelog/pending.html#hexstrings
>> https://dlang.org/deprecate.html#Hexstring%20literals
>>
>> Hence, the grammar has been incompletely updated. As it's not 
>> an error to use them now, it should have stated that they are 
>> deprecated.
>>
>> Anyhow, you can always go back in time:
>>
>> https://docarchives.dlang.io/v2.078.0/spec/lex.html#HexString
>
> PR: https://github.com/dlang/dlang.org/pull/2190

... and back online: http://dlang.org/spec/lex.html#hex_strings