Options

[foxfriends]

Option<T> does not serialize the same way as other enums. Attempting to use such an option from Lumber is proving to be confusing.

There are two options here (no pun intended):

1. Serialize options like other enums ('Option'('Some'(T)) and 'Option'('None'))
2. Use the idea from #12 (where ?T and !T are patterns that match on the current bound-ness of a variable):
   • Let None in Rust mean "unbound" in Lumber (serializing to _).
   • Let Some(T) in Rust mean "bound" in Lumber (serializing to T).
   • When deserializing, deserialize an unbound variable (bound to _) to None and a variable bound to T to Some(T).
   • Serialize () to _, and deserialize to () always succeeds. (alternatively deserialize to () only succeeds if the value remains unbound?).