Update changelog.

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 ## [Unreleased]
 
 ### Added
+- `NimBLEDevice::setOwnAddrType` added to enable the use of random and random-resolvable addresses, by asukiaaa  
+
+- New examples for securing and authenticating client/server connections, by mblasee.  
+
+- `NimBLEAdvertiseing::SetMinPreferred` and `NimBLEAdvertiseing::SetMinPreferred` re-added.  
+
 - Conditional checks added for command line config options in `nimconfig.h` to support custom configuration in platformio.  
 
 - `NimBLEClient::setValue` Now takes an extra bool parameter `response` to enable the use of write with response (default = false).  
@@ -20,8 +26,14 @@ to obtain information about the disconnected client.
 - Conditional checks in `nimconfig.h` for command line defined macros to support platformio config settings.  
 
 ### Changed
+- `NimBLEAdvertising::start` now returns a bool value to indicate success/failure.  
+
+- Some asserts were removed in `NimBLEAdvertising::start` and replaced with better return code handling and logging.    
+
+- If a host reset event occurs, scanning and advertising will now only be restarted if their previous duration was indefinite.  
+
 - `NimBLERemoteCharacteristic::subscribe` and `NimBLERemoteCharacteristic::registerForNotify` will now set the callback
-  regardless of the existance of the CCCD and return true unless the descriptor write operation failed.  
+regardless of the existance of the CCCD and return true unless the descriptor write operation failed.  
 
 - Advertising tx power level is now sent in the advertisement packet instead of scan response.  
 
@@ -29,6 +41,26 @@ to obtain information about the disconnected client.
 this allows the starting of a new scan from the callback function.  
 
 ### Fixed
+- Sometimes `NimBLEClient::connect` would hang on the task block if no event arrived to unblock.  
+A time limit has been added to timeout appropriately.  
+
+- When getting descriptors for a characterisic the end handle of the service was used as a proxy for the characteristic end  
+handle. This would be rejected by some devices and has been changed to use the next characteristic handle as the end when possible.  
+
+- An exception could occur when deleting a client instance if a notification arrived while the attribute vectors were being  
+deleted. A flag has been added to prevent this.  
+  
+- An exception could occur after a host reset event when the host re-synced if the tasks that were stopped during the event did  
+not finish processing. A yield has been added after re-syncing to allow tasks to finish before proceeding.  
+  
+- Occasionally the controller would fail to send a disconnected event causing the client to indicate it is connected  
+and would be unable to reconnect. A timer has been added to reset the host/controller if it expires.  
+  
+- Occasionally the call to start scanning would get stuck in a loop on BLE_HS_EBUSY, this loop has been removed.  
+
+- 16bit and 32bit UUID's in some cases were not discovered or compared correctly if the device  
+advertised them as 16/32bit but resolved them to 128bits. Both are now checked.  
+  
 - `FreeRTOS` compile errors resolved in latest Ardruino core and IDF v3.3.  
 
 - Multiple instances of `time()` called inside critical sections caused sporadic crashes, these have been moved out of critical regions.