Promise4j 1.6.0

Change logs:

• Support timeoutAfter for Promise

Promise4j 1.5.0

Change logs:

• support then always
• support then conditional
• fix JoinedPromise where the list is empty

Promise4j 1.4.1

Change logs:

• Add getResults to JoinedResults

Promise4j 1.4.0

Change logs:

• Add then(), map(), Promise.all()
• No need to specify generic type when use filterDone or map

Promise4j 1.3.1

Change logs:

• Support Promise.ofSimple()

Promise4j 1.3.0

Change logs:

• Support forwarding result from Promise to Deferred

Promise4j 1.2.0

Change logs:

• Support withTimeout
• Support getStatus() on Promise

Promise4j 1.1.2

Change logs:

• Don't throw exception on subsequent calls to resolve() and reject()

Promise4j 1.1.1

Change logs:

• Support retry via FailSafe
• Support synchronous call to get result via get()

Promise4j 1.1.0

Change logs:

• Support AlwaysCallback
• Support JoinedPromise