Swift 3.1 and some bug fixes

• Dropped Swift 2.3 support.
  #150, @ilyapuchka
• Added custom logging function.
  #146, @Pr0Ger

Fixed

• Fixed Swift 3.1 warnings.
  #145, @DenHeadless
• Fixed collaboration shared references.
  #151, @ilyapuchka
• Fixed autowiring when using tags.
  #154, @ilyapuchka