DMD 0.170 release

[Walter Bright]

Serg Kovrov wrote:
> Hi Walter Bright, you wrote:
>> Added foreach_reverse, which addresses a serious shortcoming.
>> http://www.digitalmars.com/d/changelog.html
> 
> Thanks for great work, Walter!
> 
> Although could someone explain what exactly "null is now an exact match 
> for null pointers, delegates, arrays, class objects, etc." changed?

It makes overloading work more naturally. See bugzilla 412 for an 
example. It now works analogously to string literals, which will match 
any string type exactly.