Bump version to 4.1.2

Bump version in podspec to 4.1.1

Create 4.1 release (#148)

* Update SwiftTweaks.podspec
* Bump Swift version to Swift 5
* Bump min-iOS-version to 10 in SwiftPM and CocoaPods

Create 4.1 release (#148)

* Update SwiftTweaks.podspec
* Bump Swift version to Swift 5
* Bump min-iOS-version to 10 in SwiftPM and CocoaPods

Bump min-iOS-version to 10

Update SwiftTweaks.podspec

Merge pull request #122 from erikpoort/call-callback-in-floating-twea…

…k-group

Call TweakAction closures in floating tweak window

Add "reopen tweaks" button to Floating Tweak Window

Previously, once you were in the "floating tweak window" state, you couldn't get right back into SwiftTweaks' main interface.

Now there's a new button on the floating tweak window that pops you back into SwiftTweaks' interface.

Updating podspec to 4.0.1

Merge pull request #115 from metalabdesign/mjarvis/swift-4.2

Migrate to Xcode 10 and Swift 4.2