Checking in changes prior to tagging of version v0.3.3

## [v0.3.3](https://github.com/Songmu/goxz/compare/v0.3.2...v0.3.3) (2019-04-08)

* Capture stdout and stderr of go list separately [#14](https://github.com/Songmu/goxz/pull/14) ([itchyny](https://github.com/itchyny))