Toaster Versions Save

• Add Xcode 12 support

• Add Swift 4.2 support 🚀 (#133, @Coeur)
• Add Swift 5 support 🚀 (#145, @devxoul)
• Windows are now always sorted by windowLevel (#138, @Coeur)

• Fix a bug that cancel() doesn't cancel a toast immediately (#123, @ldiqual)

• Add Swift 4 support ✨

• Skip start() if toaster is already executing (#110)
• Skip finish() if not currently executing (#109)

• Fix infinite recursive call in test target (#98, @Coeur)

• Fix Xcode 8.3 deprecation warning of M_PI (#97, @Coeur)

• Use pod_target_xcconfig to configure Swift version (#92, @hypery2k)

JLToast is renamed to Toaster and now supports Swift 3. There are many breaking API changes. See #89 for more detail.

• Don't start toast if self is released. (#82, @hjhcn)