Review of std.signal

[ilya-stromberg]

On Thursday, 7 November 2013 at 13:45:57 UTC, Dicebot wrote:
> Our current victim is std.signal by Robert Klotzner which is 
> supposed to deprecate and supersede existing (and broken) 
> std.signals

Robert, it will be great to see some more documentation for 
`std.signal`.
For example, you can:
  - add more usage examples for each public function
  - add tread-safe example for multi-tread application
  - add better signal description and add more external links (for 
examle, to the wikipedia - 
http://en.wikipedia.org/wiki/Signals_and_slots). Look at the old 
std.signals - http://dlang.org/phobos/std_signals.html