Release v0.3.4

Merge Fixed broken alias handling. #7.
Close out https://github.com/carpedm20/emoji/milestones/v0.3.4.
Update changelog with mention of aliases and restoration of default functionality.
Make sure aliases are properly documented after the recent changes.
Create a v0.3-maint branch as a safety measure and keep it in git.
Tag a release in GitHub.
Upload to PyPi.

Provide feedback