• Deprecated FlowdockHandler & Formatter as the flowdock service was shutdown (#1748)
• Added ClosureContextProcessor to allow delaying the creation of context data by setting a Closure in context which is called when the log record is used (#1745)
• Added an ElasticsearchHandler option to set the op_type to create instead of the default index (#1766)
• Added support for enum context values in PsrLogMessageProcessor (#1773)
• Added graylog2/gelf-php 2.x support (#1747)
• Improved BrowserConsoleHandler logging to use more appropriate methods than just console.log in the browser (#1739)
• Fixed GitProcessor not filtering correctly based on Level (#1749)
• Fixed WhatFailureGroupHandler not catching errors happening inside close() (#1791)
• Fixed datetime field in GoogleCloudLoggingFormatter (#1758)
• Fixed infinite loop detection within Fibers (#1753)
• Fixed AmqpHandler->setExtraAttributes not working with buffering handler wrappers (#1781)