unwrap-sugar

This just unwraps all expression in the macro simply.
The expressions must be unwrapable.

Usage

```rust unwrap_sugar! { // Immutable a = Some('a');

// Mutable
mut b = Some('b');

// Immutable with Type
c:char = {
    Some('C').map(|x| x.to_ascii_lowercase())
};

};

asserteq!(a, 'a'); asserteq!(b, 'b'); assert_eq!(c, 'c'); ```