Make constructors curried

It would be convenient if constructors were curried. (Not by default but when they take less arguments then supposed, like R.curry)

Example:

const Person = daggy.tagged('Person', ['name', 'age'])

const lift2 = (f, x, y) = x.map(f).ap(y)

// this won't work, because Person constructor isn't curried:
lift2(Person, Just('Rick Sanches'), Nothing)

I’ll try to send PR if you like the idea.

[safareli]

@gwn The error is expected https://github.com/fantasyland/daggy/blob/master/test/daggy.js#L19-L29 The pr hasn’t made constructors curried. it made them “curriable”, which means they have length set to number of expected arguments, so you can use R.curry (instead of R.curryN).

[Avaq]

@safareli In my experience, using arguments is usually faster.