1.22.0

• Added SlackbotHandler and SlackWebhookHandler to set up Slack integration more easily
• Added MercurialProcessor to add mercurial revision and branch names to log records
• Added support for AWS SDK v3 in DynamoDbHandler
• Fixed fatal errors occuring when normalizing generators that have been fully consumed
• Fixed RollbarHandler to include a level (rollbar level), monolog_level (original name), channel and datetime (unix)
• Fixed RollbarHandler not flushing records automatically, calling close() explicitly is not necessary anymore
• Fixed SyslogUdpHandler to avoid sending empty frames
• Fixed a few PHP 7.0 and 7.1 compatibility issues

1.21.0

• Break: Reverted the addition of $context when the ErrorHandler handles regular php errors from 1.20.0 as it was causing issues
• Added support for more formats in RotatingFileHandler::setFilenameFormat as long as they have Y, m and d in order
• Added ability to format the main line of text the SlackHandler sends by explictly setting a formatter on the handler
• Added information about SoapFault instances in NormalizerFormatter
• Added $handleOnlyReportedErrors option on ErrorHandler::registerErrorHandler (default true) to allow logging of all errors no matter the error_reporting level

1.20.0

• Added FingersCrossedHandler::activate() to manually trigger the handler regardless of the activation policy
• Added StreamHandler::getUrl to retrieve the stream's URL
• Added ability to override addRow/addTitle in HtmlFormatter
• Added the $context to context information when the ErrorHandler handles a regular php error
• Deprecated RotatingFileHandler::setFilenameFormat to only support 3 formats: Y, Y-m and Y-m-d
• Fixed WhatFailureGroupHandler to work with PHP7 throwables
• Fixed a few minor bugs

1.19.0

• Break: StreamHandler will not close streams automatically that it does not own. If you pass in a stream (not a path/url), then it will not close it for you. You can retrieve those using getStream() if needed
• Added DeduplicationHandler to remove duplicate records from notifications across multiple requests, useful for email or other notifications on errors
• Added ability to use %message% and other LineFormatter replacements in the subject line of emails sent with NativeMailHandler and SwiftMailerHandler
• Fixed HipChatHandler handling of long messages

1.18.2

• Fixed ElasticaFormatter to use more precise dates
• Fixed GelfMessageFormatter sending too long messages

1.18.1

• Fixed SlackHandler bug where slack dropped messages randomly
• Fixed RedisHandler issue when using with the PHPRedis extension
• Fixed AmqpHandler content-type being incorrectly set when using with the AMQP extension
• Fixed BrowserConsoleHandler regression

1.18.0

• Added optional reduction of timestamp precision via Logger->useMicrosecondTimestamps(false), disabling it gets you a bit of performance boost but reduces the precision to the second instead of microsecond
• Added possibility to skip some extra stack frames in IntrospectionProcessor if you have some library wrapping Monolog that is always adding frames
• Added Logger->withName to clone a logger (keeping all handlers) with a new name
• Added FluentdFormatter for the Fluentd unix socket protocol
• Added HandlerWrapper base class to ease the creation of handler wrappers, just extend it and override as needed
• Added support for replacing context sub-keys using %context.*% in LineFormatter
• Added support for payload context value in RollbarHandler
• Added setRelease to RavenHandler to describe the application version, sent with every log
• Added support for fingerprint context value in RavenHandler
• Fixed JSON encoding errors that would gobble up the whole log record, we now handle those more gracefully by dropping chars as needed
• Fixed write timeouts in SocketHandler and derivatives, set to 10sec by default, lower it with setWritingTimeout()
• Fixed PHP7 compatibility with regard to Exception/Throwable handling in a few places

1.17.2

• Fixed ErrorHandler compatibility with non-Monolog PSR-3 loggers
• Fixed SlackHandler handling to use slack functionalities better
• Fixed SwiftMailerHandler bug when sending multiple emails they all had the same id
• Fixed 5.3 compatibility regression

1.17.1

• Fixed RollbarHandler triggering PHP notices

1.17.0

• Added support for checksum and release context/extra values in RavenHandler
• Added better support for exceptions in RollbarHandler
• Added UidProcessor::getUid
• Added support for showing the resource type in NormalizedFormatter
• Fixed IntrospectionProcessor triggering PHP notices