Named tensors

[novusnota]

For example, instead of send(params: SendParameters), i.e. requiring users to write this:

send(SendParameters{
    bounce: true,
    to: sender(),
    value: 0,
});

we could support inlining of the fields of SendParameters as pseudo-parameters of the send() function, allowing the following usage:

send(bounce: true, to: sender(), value: 0);
//           ^^^^ default

This might or might not be generalized to apply everywhere Structs or Messages are used as parameters. This is up for discussion.