Prepare 4.2.1 release (#198)

* Changes user-device to device model identifier (#75)

* installs new deviceModel into EnvironmentReporter and renames old deviceModel to deviceType

* use CwSysCtl for macos model

* Replaced entire flag store ff array instead of in place manipulation

* Updated CHANGELOG and bumped version number

* Added correct copy behavior to FlagStore delete and update

* Improved CHANGELOG entry for 4.0.1

* Changed version to 4.1.0, updated CHANGELOG

* Update 4.1.0 release date

* installs ios-eventsource 4.0.2

* installs CocoaPods 1.7.2

* clears swift 5 update warning

* updates circle config to use xcode 10.2.1

* advances version to 4.1.1

* installs Nimble 8.0.2

* updates SwiftLint to 0.33.0

* Update 4.1.1 release date

* Improved CHANGELOG 4.1.1 description

* Made CHANGELOG 4.1.1 more consistent

* 4.1.2 release, updated version numbers and CHANGELOG

* Made 4.1.2 CHANGELOG entry more descriptive

* Rebuilt Connection Status, added unit tests, fixed warnings

* Changed guard to equals in Dictionary extension, changed ConnectionInformation to struct

* Fixed threading issues and reference semantics

* Improved ConnectionInformation toString, fixed background behavior

* Added network connectivity check, changed TimeIntervals to Optionals

* Added Connection Status files to correct Target Membership, added conditional compilation of network connectivity check for WatchOS

* PR review changes

* More PR review changes

* Even more PR review changes

* Removed ConnectionInformationCaching, removed redundant variables

* Simplified synchronizing error behavior for connection status

* DRY up setupListeners

* Fixed string cases for LastConnectionFailureReason Codable

* Forgot to add polling last successful connection

* Store is now in Cache dir, removed listeners and 1 ldclient.shared, changed TimeInterval to Date, changed two inout's to var's

* Added ConnectionModeChangedObserver

* Fixed confusing docstring, removed unnecessary flag synchronizer

* Changed getValue and toString to description

* Changed description to computed property

* Removed connectionModeCheck

* Improved background connection status behavior

* Changed ConnectionInformation description to computed property

* Added new identify method, updated swiftlint rules

* Made Identify actually change the user, fixed unit tests

* Removed unnecessary _user assignment

* Move swiftlint disable to LDClient, move user assignment into identifyInternal

* Added private setOnline and go functions for identify

* Forgot to replace go in guard with goIdentify

* Copied user property unit tests for identify

* Added optimization to not call setOnline when there is no completion and wasOnline is false

* Testing identifyInternal change in IH

* requested PR changes

* Fixed convertCachedData call count, some PR feedback fixes

* Simplified unit tests, added comment about thread safety

* Changed lastSuccessfulConnection to lastKnownFlagValidity, added on stream close listener

* Fixed handler

* Remove unnecessary import

* Changed eventSource access level

* Reset lastKnownFlagValidity to nil when we make a successful stream connection

* Made comment about lastKnownFlagValidity having a value more clear

* Changed guard let to if let in DarklyService EventSource extension

* Updated README, CHANGELOG, and podspec for 4.2.0

* [4.2.1] - 2019-11-15 (#81)

* Added 4.2.1 changes including Dictionary fix and test and eventsource version bump

* Added Carthage build files

* Added attribution to CHANGELOG

CHANGELOG.md

@@ -5,6 +5,13 @@ All notable changes to the LaunchDarkly iOS SDK will be documented in this file.
 ### Multiple Environment clients
 Version 4.0.0 does not support multiple environments. If you use version `2.14.0` or later and set `LDConfig`'s `secondaryMobileKeys` you will not be able to migrate to version `4.0.0`. Multiple Environments will be added in a future release to the Swift SDK.
 
+## [4.2.1] - 2019-11-15
+### Changed
+- Updated to `ios-eventsource` version `4.0.3`. This appends a platform name to bundle identifiers. (Thanks, [cswelin](https://github.com/launchdarkly/ios-eventsource/pull/28)!)
+
+### Fixed
+- Comparing two nil objects of type `[String: Any]?` no longer causes a crash. ([#197](https://github.com/launchdarkly/ios-client-sdk/issues/197))
+
 ## [4.2.0] - 2019-10-25
 ### Added
 - The `identify` function allows a completion to be called after a user is updated.

Cartfile

@@ -1 +1 @@
-github "launchdarkly/ios-eventsource" >= 4.0.2
+github "launchdarkly/ios-eventsource" >= 4.0.3

Cartfile.resolved

@@ -1 +1 @@
-github "launchdarkly/ios-eventsource" "4.0.2"
+github "launchdarkly/ios-eventsource" "4.0.3"