Why are Solute instances of phetioType ObjectIO?

[zepumph]

We are passing Solute.SoluteIO in as a phetioType, so I would have thought that would be the phetioType. Discovered while investigating #243.

SOLUTION:

Ahhh, because all solutes are static instances, and so is the IOType. We need to create the IOType before the other statics. Commit coming soon.

[zepumph]

@pixelzoom, this was my confusion over in (2) of #243 (comment). Note now how you can see the ph of the Solute in something like phScale.global.model.solutes.blood in studio as an "initial value". Please review.

[pixelzoom]

Thanks. Good to know that TS is just as stupid as JS when it comes to static definitions. I'll need to apply this to other sims too.

[zepumph]

It is worth tagging @samreid just to make sure that he sees 734e5ef