0.17.0: SourceKnitting

Threads! We love to hate them. This release makes it safer to use SourceKitten in multi-threaded scenarios.

Breaking

• Change Text enum case names to match Swift 3 API guidelines.
  @istx25

Enhancements

• None.

Bug Fixes

• Make sending Requests safer in concurrent environments.
  @krzysztofzablocki