0.4.0 Skip Submission - Better Beta Support

Thanks to the great work by @paweldudek, you can now skip the submission of the update itself and use deliver to only upload metadata and an ipa file.

Changes include:

• To skip the submission of the newly uploaded ipa use deliver --skip-deploy
• You can provide both an ipa and a beta_ipa block. By default the ipa block will be called. If you use deliver --beta it will use the beta_ipa function.
• Improvements for the submit process for new apps