Every function that takes an Array should also allow an Iterable

So each one of these should also take an Iterable:

### Helpers
- [ ] `mconcat`
- [ ] `mconcatMap`
- [ ] `mreduce`
- [ ] `mreduceMap`
- [ ] `take` **(new)**

## Pointfree
- [ ] `filter`
- [ ] `find` **(new)**
- [x] `head`
- [ ] `map`
- [ ] `reduce`
- [ ] `sequence`
- [ ] `tail`
- [ ] `traverse`

Since we are now exposing the possibility of infinite values, makes sense to add a `take` function at this point.