v2.3

• added Lazy object and JKScope methods
• replaced let of value method with opt method
• replaced asUnchecked functional interface method with unchecked static method due to implementation problems

v2.2

• renamed let interface method to letIt (due to the same method name as a static method)
• added letIntWith, letLongWith, letDoubleWith static methods

v2.1

• added Opt.throwIfEmpty method
• added JKScope.withResource and JKScope.letWithResource static methods

v2.0

Big refactoring

v1.0

First release