Xcode 9.3 and Swift 4.1 Support

Released on 2018-03-31. All issues associated with this milestone can be found using this
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Added

• Jazzy docs.
  • Added by Jon Shier in Pull Request #28.
• Pull request and issue templates.
  • Added by Jon Shier in Pull Request #28.

Updated

• Project settings and dependencies for Xcode 9.3 and Swift 4.1.
  • Updated by Jon Shier in Pull Request #33.

Fixed

• Swift Package Manager integration by removing Swift Package Manager support.
  • Fixed by Jon Shier in Pull Request #28.