[Mono-list] Contributing TimeSpan class?

[Duco Fijma]

Jeremy Werner wrote:
> 
> I was just about to send the same message :)
> How far along are you?

The ToString, Parse and From**** methods are the only ones left I
haven't at least a basic implementation for. For the rest, I'm tidying
up on little details like calling Equals or operator == with some
incompatible object type or a null reference (though things like these
is more testing that substantial "development"). Also, I haven't yet
looked at the details of checking for overflow in Add and Subtract.

Duco