Dynamic port node

[aol-nnov]

@signmotion 's work squashed and rebased (as of 5bab847f455409f78028b6b11a452279fee97dc8)

All credits go to @signmotion

obsoletes #209

[aol-nnov]

oh, Y U fail all checks...

(I'll get back to it tomorrow..)

[mortbopet]

Any updates on this?

[paceholder]

I am closing multile "dynamic node" or pull requests or proposals. The feature is implemented in master. Thanks for your contribution.