union 0.0.3

Type safe union types for dart, by using extensions from Dart 2.6

0.0.3

Unions are now implemented using functions instead of classes.

This allows assigning Union2<A, B> to Union3<A, B, Whatever>.

0.0.2

Allow const constructors on unions.

0.0.1

Optimized join/map/forEach from O(N) to O(1).

0.0.0+1

Improve pub score

0.0.0

Initial release