prepare 2.6.0 release (#112)

Author: eli-darkly

.circleci/config.yml

@@ -13,6 +13,7 @@ jobs:
           command: npm run test:junit
           environment:
             JEST_JUNIT_OUTPUT: "./reports/junit/js-test-results.xml"
+      - run: npm run check-typescript
       - store_test_results:
           path: reports/junit/
       - store_artifacts:

CHANGELOG.md

@@ -3,6 +3,13 @@
 All notable changes to the LaunchDarkly client-side JavaScript SDK will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org).
 
+## [2.6.0] - 2018-09-07
+### Added:
+- The new configuration option `evaluationReasons` causes LaunchDarkly to report information about how each feature flag value was determined; you can access this information with the new client method `variationDetail`. The new method returns an object that contains both the flag value and a "reason" object which will tell you, for instance, if the user was individually targeted for the flag or was matched by one of the flag's rules, or if the flag returned the default value due to an error.
+
+### Changed:
+- In streaming mode, the client will attempt to reconnect if it receives an HTTP error status from LaunchDarkly. Previously, it would only retry if the connection was lost.
+
 ## [2.5.0] - 2018-08-27
 ### Changed:
 - Starting in version 2.0.0, there was a problem where analytics events would not be generated correctly if you initialized the client with bootstrap data, because the bootstrap data did not include some flag metadata that the front end uses for events. The client now supports an extended format for bootstrap data that fixes this problem; this is generated by calling a new method that has been added to the server-side SDKs, `allFlagsState`/`all_flags_state` (previously `allFlags`/`all_flags`). Therefore, if you want analytics event data and you are using bootstrap data from the back end, you should upgrade both your JavaScript SDK and your server-side SDK, and use `allFlagsState` on the back end. This does not require any changes in your JavaScript code. If you use bootstrap data in the old format, the SDK will still be usable but events will not work correctly.