Add new CHANGELOG and bump 1.3.1 (#528)

CHANGELOG.md

@@ -0,0 +1,30 @@
+# CHANGELOG
+
+The changelog for `Hero`. Also see the [releases](https://github.com/HeroTransitions/Hero/releases) on GitHub.
+
+--------------------------------------
+
+## Upcoming release
+
+## [1.3.1](https://github.com/HeroTransitions/Hero/releases/tag/1.3.1)
+
+### Fixed
+
+- Fixed the retain cycle caused by strong references to `previousNavigationDelegate` and `previousTabBarDelegate`.
+[#516](https://github.com/HeroTransitions/Hero/pull/516) by [@mkieselmann](https://github.com/mkieselmann)
+
+## [1.3.0](https://github.com/HeroTransitions/Hero/releases/tag/1.3.0)
+
+### Added
+- Adds an optional completion block parameter to the `dismissViewController` and `replaceViewController` methods.
+[#456](https://github.com/HeroTransitions/Hero/pull/456) by [@kartikthapar](https://github.com/kartikthapar)
+
+### Changed
+- Allows previous `UINavigationController` delegate to handle delegate events.
+[#430](https://github.com/HeroTransitions/Hero/pull/430) by [@bradphilips](https://github.com/bradphilips)
+
+### Fixed
+- Fixed shadows being cutoff by snapshots. 
+[#440](https://github.com/HeroTransitions/Hero/pull/440) by [@2blane](https://github.com/2blane)
+- Fixed animation flickering on CALayer animation.
+[f4dab9](https://github.com/HeroTransitions/Hero/commit/f4dab9ed2ab88ae065605199d5aca7706b07c2ad) by [@lkzhao](https://github.com/lkzhao)

Hero.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = "Hero"
-  s.version          = "1.3.0"
+  s.version          = "1.3.1"
   s.summary          = "Elegant transition library for iOS"
 
   s.description      = <<-DESC

Sources/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.3.0</string>
+	<string>1.3.1</string>
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 	<key>NSPrincipalClass</key>