ChangeLog updates for 1.1.0

ChangeLog.md

@@ -1,3 +1,26 @@
+2020-05-13  Version 1.1.0
+  * Improvements to thread safety of LinkInfo and its ancestors.
+  * Eliminate queueing and retry of /v1/url requests. A long link will now be
+    generated immediately on any request failure.
+
+  This required some changes to the public interface of `BaseEvent`. The return
+  types of `getCustomData()` and `name()` have changed to avoid returning
+  pointers or references to unsynchronized objects from synchronized getters.
+
+  ```c++
+  BranchIO::JSONObject getCustomData() const;
+  std::string name() const;
+  ```
+
+  In addition, the destructor of `LinkInfo` will now block while any background
+  request is in progress. Once `createUrl()` is called, the `LinkInfo` object
+  is guaranteed to outlive the thread that executes the request. To force
+  immediate termination of the background thread, use `LinkInfo::cancel()`.
+
+  Also note that each `LinkInfo` instance can currently only be used once to
+  generate a URL. For now, create a new `LinkInfo` instance for each URL
+  request. This will be improved in a future release.
+
 2020-05-01  Version 1.0.1
   * Updated Poco dependency to ~=1.9.4, allowing patch revisions via `conan install --update`.
     This addresses an HTTPS failure on Windows.