A few simple syntactic proposals

[Robert Fraser]

Robert Fraser wrote:
> Okay, I read the "handling constructive criticism" topic and Walter's 
> reply where he suggests that proposals should go into bugzilla. Based on 
> that, I want to start a topic on _MINOR_ changes to the syntax and 
> semantics of D that most people should agree upon. If there's any 
> objection to these at all, it probably warrants more discussion before 
> going into bugzilla, but otherwise these should be added as bugs.
> 
> All of these proposals apply to D2 only. D1 needs to remain as stable as 
> possible, IMO, though a few of these might be candidates for backporting.
> 
> I'll start us off with 3 off the top of my head:
> 
> [...]

Also:
Remove the implicit "length" inside slice brackets as it conflicts with 
outer length. Allow only $.