Carthage: Upgrade to Swift 3

[mdiep]

Xcode 8.2 won't include Swift 2, so now is the time to start upgrading to Swift 3.

[ikesyo]

Xcode 8.2 still includes Swift 2.3 (that is the final release supporting 2.3) but switching to Swift 3 now should be good anyway.

[ikesyo]

Dependencies status:

• [x] ReactiveTask ~> 0.11
• [x] Commandant ~> 0.11.2
• [x] PrettyColors ~> 5.0
• [x] ReactiveSwift ~> 1.0
• [x] Tentacle ~> 0.5
• [x] Quick ~> 0.10
• [x] Nimble ~> 5.1

[ikesyo]

I'm planning have numerous pre-migration tasks on Swift 2.3 for easier review, those make diff volumes of an actual migration pull request fewer:

• [x] Adopt API Design Guidelines (mainly functions, methods)
  
  
  
  • #1602, #1605, #1639, #1645, #1646, #1656, #1678, #1683, #1684, #1698
  
  
  • #1734
  
  
• [x] Adopt SE-0066 #1609
• [x] Make enum cases lowerCamelCase
  
  
  
  • [x] CarthageError #1568
  
  
  • [x] #1570
  
  
  • [x] #1571
  
  
  • [x] ProjectEvent #1574
  
  
  • [x] ProjectLocator #1575
  
  
  • [x] ProjectIdentifier #1576
  
  
  • [x] VersionSpecifier #1577
  
  
• [x] Rename URL to url to avoid conflict with Foundation.URL #1612
• [x] dynamicType -> type(of:) #1566
• [x] Integrate Runes dependency in advance (comes from Argo 4.x) #1564
• [x] Shims - Stdlib
  
  
  
  • [x] String #1650
  
  
  • [x] Array, Set (Sequence, Collection) #1640
  
  
• [x] Shims - Foundation (Drop NS prefixes using typealias)
  
  
  
  • [x] #1669
  
  
  • [x] Bundle #1586
  
  
  • [x] CharacterSet #1592
  
  
  • [x] ComparisonResult #1594
  
  
  • [x] Data, Date and FileHandle #1597
  
  
  • [x] FileManager #1591, #1633
  
  
  • [x] NSRegularExpression and NSTextCheckingResult #1593
  
  
  • [x] NSString #1643
  
  
  • [x] ProcessInfo #1598
  
  
  • [x] Scanner #1595
  
  
  • [x] URL #1630, #1714
  
  
  • [x] UUID #1599
  
  
• [x] Shims - Dependencies
  
  
  
  • [x] Commandant #1685, #1735
  
  
  • [x] PrettyColors #1613
  
  
  • [x] Result #1578, #1675
  
  
  • [x] ReactiveTask #1579, #1670
  
  
  • [x] ReactiveSwift #1580, #1582, #1584, #1600, #1671, #1711
  
  
  • [x] Tentacle #1601
  
  
• Introduce AnyJSON typealias to mitigate AnyObject to Any conversion
• SE-0091: Implement == operator for Equatable as a static function
  
  
  
  • Can't define on Swift 2.3: Operators are only allowed at global scope 😞
  
  
• ...

[mdiep]

What's the best way for me to help with this?

It seems that Xcode 8.3 is just around the corner, so we should try to finish this up.

[ikesyo]

Thank you @mdiep. I'd like to submit an actual migration pull request once #1734 and #1735 are merged.

[ikesyo]

This should have been done (except for entirely following API Design Guidelines).

[mdiep]

💖