[ios] Prepare for ios-v5.1.0 release

platform/ios/CHANGELOG.md

@@ -2,14 +2,16 @@
 
 Mapbox welcomes participation and contributions from everyone. Please read [CONTRIBUTING.md](../../CONTRIBUTING.md) to get started.
 
-## 5.1.0
+## 5.1.0 - June 19, 2019
 
 ### Styles and rendering
 
+* Fixed a crash when a fill pattern in a style could not be found. ([#14696](https://github.com/mapbox/mapbox-gl-native/pull/14696))
 * Setting `MGLMapView.contentInset` now moves the map’s focal point to the center of the content frame after insetting. ([#14664](https://github.com/mapbox/mapbox-gl-native/pull/14664))
 * Fixed a rendering performance regression when rendering polylines. ([#14851](https://github.com/mapbox/mapbox-gl-native/pull/14851))
 * Fixed a rendering performance regression introduced in 4.11.0. ([#14907](https://github.com/mapbox/mapbox-gl-native/pull/14907))
 * Fixed an issue where symbols underneath opaque fill layers could be incorrectly drawn above such layers. ([#14839](https://github.com/mapbox/mapbox-gl-native/pull/14839))
+* Fixed an issue where `MGLFillExtrusionStyleLayer` vertical gradients might not be rendered. ([#14808](https://github.com/mapbox/mapbox-gl-native/pull/14808))
 
 ### Other changes
 
@@ -25,6 +27,7 @@ There are no breaking API changes in this release.
 ### Styles and rendering
 
 * Changed placement order of `MGLSymbolStyleLayer` to match the viewport-y order when `MGLSymbolStyleLayer.symbolZOrder` is set to `MGLSymbolZOrderViewportY`, allowing icons to overlap but not text. ([#14486](https://github.com/mapbox/mapbox-gl-native/pull/14486))
+* Added `MGLSymbolStyleLayer.symbolSortKey` and `MGLSymbolZOrderAuto` to allow customization of symbol z-ordering. ([#14386](https://github.com/mapbox/mapbox-gl-native/pull/14386))
 
 ### Other changes
 

platform/ios/Mapbox-iOS-SDK-snapshot-dynamic.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |m|
 
-  version = '5.1.0-beta.1'
+  version = '5.1.0'
 
   m.name    = 'Mapbox-iOS-SDK-snapshot-dynamic'
   m.version = "#{version}-snapshot"

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

@@ -1,6 +1,6 @@
 Pod::Spec.new do |m|
 
-  version = '5.1.0-beta.1'
+  version = '5.1.0'
 
   m.name    = 'Mapbox-iOS-SDK-stripped'
   m.version = "#{version}-stripped"

platform/ios/Mapbox-iOS-SDK.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |m|
 
-  version = '5.1.0-beta.1'
+  version = '5.1.0'
 
   m.name    = 'Mapbox-iOS-SDK'
   m.version = version