chore(release): 0.4.0 [skip ci]

# [0.4.0](v0.3.1...v0.4.0) (2020-07-28)

### Bug Fixes

* linting errors after rebase with latest master ([3679652](3679652))
* unit tests fixed after rebase with latest master ([a806740](a806740))
* unit tests for sponsored tx (redundant null property) ([c918235](c918235))

### Features

* add sponsor transaction option to debug broadcast endpoints ([4511a50](4511a50))
* support sponsored tx in db and API response ([01703e7](01703e7))

Author: semantic-release-bot

CHANGELOG.md

@@ -1,3 +1,18 @@
+# [0.4.0](https://github.com/blockstack/stacks-blockchain-api/compare/v0.3.1...v0.4.0) (2020-07-28)
+
+
+### Bug Fixes
+
+* linting errors after rebase with latest master ([3679652](https://github.com/blockstack/stacks-blockchain-api/commit/3679652058df3b6456ed16c0a8fc170499b2ac88))
+* unit tests fixed after rebase with latest master ([a806740](https://github.com/blockstack/stacks-blockchain-api/commit/a806740cb59537cf1048a97114cec64be0daa7a9))
+* unit tests for sponsored tx (redundant null property) ([c918235](https://github.com/blockstack/stacks-blockchain-api/commit/c9182357a2e52db97159c04de6b52976ca241409))
+
+
+### Features
+
+* add sponsor transaction option to debug broadcast endpoints ([4511a50](https://github.com/blockstack/stacks-blockchain-api/commit/4511a502650bc834540ea032eb476ba2b09d8d84))
+* support sponsored tx in db and API response ([01703e7](https://github.com/blockstack/stacks-blockchain-api/commit/01703e7222828b6df2ed1ed0e26de3e9ae18d11e))
+
 ## [0.3.1](https://github.com/blockstack/stacks-blockchain-api/compare/v0.3.0...v0.3.1) (2020-07-28)