Add changelog and bump version

Author: designatednerd

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Change log
 
+### v0.16.0
+- **BREAKING**: We've switched to a much simpler setup which does not involve NPM in order to use our CLI. This requires updating your build scripts. Please follow the [updated instructions for setting up the build script here](https://www.apollographql.com/docs/ios/installation/#adding-a-code-generation-build-step). The existing build script will continue to work until the next minor release, at which point it will be removed. ([#766](https://github.com/apollographql/apollo-ios/pull/766))
+- Included CLI version fixes issues which showed up in `0.15.2`. 
+- **BREAKING**: We've removed all public references to our internal `Promise` implementation, which was never intended to be public. ([#709](https://github.com/apollographql/apollo-ios/pull/709))
+- Fixed a deadlock in a transaction. ([#763](https://github.com/apollographql/apollo-ios/pull/763), [#365](https://github.com/apollographql/apollo-ios/pull/365))
+- Added a `RequestCreatorProtocol` to allow you to more easily muck with and/or mock creating multipart requests. ([#771](https://github.com/apollographql/apollo-ios/pull/771))
+- Fixed an issue causing problems building with SPM in Xcode 11. ([#784](https://github.com/apollographql/apollo-ios/pull/784))
+
 ### v0.15.3
 - Revert CLI update from `0.15.2` due to unexpected build issues. 
 

Configuration/Shared/Project-Version.xcconfig

@@ -1 +1 @@
-CURRENT_PROJECT_VERSION = 0.15.3
+CURRENT_PROJECT_VERSION = 0.16.0