v0.4.0 Release

New Features and Improvements:

Query Support

• 70e6c21 update idl for query API (#224)
• 368b3cf query API client impl (#226)
• 1a0a0b7 detect blocking call in query handler (#227)

Breaking changes

• 815dd18 adding context as first parameter to all methods on our client (#239)

Use JSON as default encoding

• 5a748bd default to json encoding (#232)
• c194d87 print history blob as JSON string (#235)

Bug fixes

• b625205 fix cadence.Now() (#222)
• a01ec47 fix unit test framework (#233)
• 614a82a fix rate limiter bug (#230)
• b13ab9c no retry when context is done (#241)

Miscellaneous

• ab0bf9b fix flakey unit test (#238)
• 5cba128 Increase poll backoff exponential timeouts. (#215)
• 6045e70 set worker options field only when it is not nil (#220)
• 7266d0f add cadence- prefix to all metrics emit from library (#219)
• 9513eba Fix and add negative test case for fully qualified function name string (#213)