[ios] Update podspecs and changelog for v3.5.2

platform/ios/CHANGELOG.md

@@ -2,9 +2,10 @@
 
 Mapbox welcomes participation and contributions from everyone. Please read [CONTRIBUTING.md](../../CONTRIBUTING.md) to get started.
 
-## 3.5.2
+## 3.5.2 - April 7, 2017
 
 * Fixed an issue that caused a crash when the user location annotation was presenting a callout view and the map was moved. ([#8686](https://github.com/mapbox/mapbox-gl-native/pull/8686))
+* This release was built with Xcode 8.3.1, which fixed [a significant bitcode issue](http://www.openradar.me/31302382) introduced in Xcode 8.3 that caused Mapbox iOS SDK 3.5.1 to be 2× larger than 3.5.0.
 
 ## 3.5.1 - April 5, 2017
 

platform/ios/Mapbox-iOS-SDK-symbols.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |m|
 
-  version = '3.5.1'
+  version = '3.5.2'
 
   m.name    = 'Mapbox-iOS-SDK-symbols'
   m.version = "#{version}-symbols"

platform/ios/Mapbox-iOS-SDK.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |m|
 
-  version = '3.5.1'
+  version = '3.5.2'
 
   m.name    = 'Mapbox-iOS-SDK'
   m.version = version