Merge branch 'release/0.2.0' into develop

* release/0.2.0:
  Add version constants and bump to 0.2.0
Add Quick and Nimble submodules
Rename todos into fixmes
Uhm, nope
Xcode beta 6 fixes
Bump version to 0.2.1
Bump version in the source file
Merge branch 'develop'

* develop:
  Bump version in the source file
  Bump version to 0.2.1
  Xcode beta 6 fixes
  Uhm, nope
  Rename todos into fixmes
  Add Quick and Nimble submodules