symphony-api-client-java-1.0.13

• Use session endpoint to get bot user instead of bot config email address
• Added config fields to customise ThreadpoolSize and ErrorTimeout for DatafeedEvents
• Improved logging for Datafeed events
• Fixed sendMessage when appendTags is false so that message is not null
• Fixed the forwardMessage functionality
• Created new function sendTaggedMessage to send messages that already have messageML/presentationML tag
• Fixed extension app RSA authentication by adding appToken/authToken
• Cleanup unit tests
• Cleanup authentication classes