Make -r optional with default value "pypi" - fixes #33
refactor: simplify call to upload()
Merge pull request #35 from krisztianfekete/make-upload-repository-parameter-optional

Make upload repository parameter optional
Fix #36 - Make the username optional
Merge pull request #37 from dstufft/optional-username

Fix #36 - Make the username optional
Update IRC channel
Bump version