1.4.0 (linkerd#1924)

Linkerd 1.4.0 upgrades us to the latest versions of Finagle and Netty and
features lower memory usage for large payloads. Two new configuration options
have been introduced: client connection lifetimes and access log rotation
policy. One breaking change has been introduced around the configuration file
syntax for loggers.  This release features contributions from ThreeComma,
[ScalaConsultants](https://github.com/ScalaConsultants), [Salesforce](https://github.com/salesforce), and [Buoyant](https://github.com/buoyantio).

* **Breaking Change**: Rename the loggers section of the Linkerd config to requestAuthorizers to match the name of the plugin type ([linkerd#1900](linkerd#1900))
* Tune Netty/Finagle settings to reduce direct memory usage ([linkerd#1889](linkerd#1889)). This should dramatically reduce direct memory usage when transferring large payloads.
* Introduce a ClientSession configuration section that provides ways to control client connection lifetime ([linkerd#1903](linkerd#1903)).
* Expose rotation policy configuration for http and http2 access logs ([linkerd#1893](linkerd#1893)).
* Stop logging harmless reader discarded errors in k8s namer ([linkerd#1901](linkerd#1901)).
* Disable autoloading of the default tracer in Namerd ([linkerd#1902](linkerd#1902)). This prevents Namerd from attempting to connect to a Zipkin collector that doesn't exist.
* Upgrade to Finagle 18.4.0.

Signed-off-by: Alex Leong <alex@buoyant.io>

1.4.0-rc1

Signed-off-by: Alex Leong <alex@buoyant.io>

1.3.7 (linkerd#1888)

Linkerd 1.3.7 includes memory leak fixes, tons of improvements for Consul, and more!  This release features contributions from ThreeComma, [NCBI](https://github.com/ncbi), WePay, [Salesforce](https://github.com/salesforce), [Homeaway](https://github.com/homeaway), Prosoft, and [Buoyant](https://github.com/buoyantio).

* Add support for more types of client certificates in the ForwardClientCertFilter ([linkerd#1850](linkerd#1850)).
* Improve documentation on how to override the base Docker image ([linkerd#1867](linkerd#1867)).
* Improve the efficientcy of the dtab delegator UI ([linkerd#1862](linkerd#1862)).
* Add a command line flag for config file validation ([linkerd#1854](linkerd#1854)).
* Fix a bug where the wrong timezone was being used in access logs ([linkerd#1851](linkerd#1851)).
* Add the ability to explicitly disable TLS for specific clients ([linkerd#1856](linkerd#1856)).
* Consul:
  * Add support for TLS-encrypted communication with Consul ([linkerd#1842](linkerd#1842)).
  * Fix a connection leak to Consul ([linkerd#1877](linkerd#1877)).
  * Fix a bug where Linkerd would timeout requests to non-existent Consul datacenters ([linkerd#1863](linkerd#1877)).
* Remove many alarming but harmless error messages from Linkerd and Namerd logs ([linkerd#1871](linkerd#1871), [linkerd#1884](linkerd#1884), [linkerd#1875](linkerd#1875)).
* Fix ByteBuffer memory leaks in HTTP/2 ([linkerd#1879](linkerd#1879), [linkerd#1858](linkerd#1858)).

Signed-off-by: Alex Leong <alex@buoyant.io>

1.3.7-rc1

Signed-off-by: Alex Leong <alex@buoyant.io>

Advance headVersion to 1.3.6 (linkerd#1848)

Signed-off-by: Andrew Seigner <siggy@buoyant.io>

1.3.5 (linkerd#1783)

## 1.3.5 2018-01-17

* 🎓 H2 router and `io.l5d.mesh` Namerd interface are no longer experimental ([linkerd#1782](linkerd#1782))! 🎓
* Add an experimental namer for Rancher service discovery ([linkerd#1740](linkerd#1740)). A huge thank you to [@fangel](https://github.com/fangel) for contributing this namer!
* Kubernetes
  * Fix a bug that could cause the `io.l5d.k8s` namer to get "stuck" and fail to recieve updates from an endpoint ([linkerd#1755](linkerd#1755)). Contributed by [@obeattie](https://github.com/obeattie).
* Admin UI
  * Add `/admin/client_state.json` endpoint to return the current address set of each client ([linkerd#1768](linkerd#1768)).
  * Fix an error when using the admin UI to perform delegations with a dtab stored in Namerd over the `io.l5d.thriftNameInterpreter` interface ([linkerd#1762](linkerd#1762)). Thanks to [@jackkleeman](https://github.com/jackkleeman)!
  * Render an error instead of a blank page for failures on Namerd's dtab playground ([linkerd#1770](linkerd#1770)).
* Namerd
  * Errors parsing dtabs stored in Consul are now surfaced in log messages ([linkerd#1760](linkerd#1760)).
  * Fix an error where Linekrd could sometimes miss updates from Namerd when using the `io.l5d.thriftNameInterpreter` interface ([linkerd#1753](linkerd#1753)). Thanks to [@obeattie](https://github.com/obeattie)!

1.3.4 2017-12-15

----------------

Linkerd 1.3.4 continues the focus on reliability and stability. It includes a bugfix for HTTP/2 and gRPC routers, several improvements to the Consul namer and dtab store, fixes for 4xx responses in the Kubernetes namer, and more.

* Fix an issue where the `io.l5d.path` identifier would consume query parameters from the request URL, preventing them from reaching the downstream service ([linkerd#1734](linkerd#1734)).
* Several minor fixes to documentation and examples.
* Consul
  * Improve handling of invalid namespaces in Namerd's Consul dtab store ([linkerd#1739](linkerd#1739)).
  * Add backoffs to Consul dtab store observation retries ([linkerd#1742](linkerd#1742)).
  * Fix `io.l5d.consul` namer logging large numbers of spurious error messages during normal operation ([linkerd#1738](linkerd#1738)).
* HTTP/2 and gRPC
  * Fix buffer data corruption regression introduced in 1.3.3 ([linkerd#1751](linkerd#1751)). Thanks to [@vadimi](https://github.com/vadimi), who contributed to this fix!
* Kubernetes
  * Improve handling of Kubernetes API watch errors in `io.l5d.k8s` ([linkerd#1744](linkerd#1744), [linkerd#1752](linkerd#1752)).
* Namerd
  * Fix `NoHostsAvailable` exception thrown by `io.l5d.mesh` when Namerd has namers configured with transformers ([linkerd#1729](linkerd#1729)).

PR for 1.3.3 release (linkerd#1720)

* advance head version to 1.3.3

1.3.2 (linkerd#1705)

* advance head version

* adds changelog

* addresses comments in PR

1.3.1 2017-10-24

----------------

* Kubernetes
  * Fixed a failure to update routing data after restarting watches (linkerd#1674).
  * Ensured that Kubernetes API watch events earlier than the current state are ignored (linkerd#1681).
* Added support for Istio Mixer precondition checks (linkerd#1606).
* Removed spurious error message logging from Consul namer (linkerd#1682).
* Changed DNS SRV record namer to use system DNS resolver configuration (linkerd#1679).
* Added `timestampHeader` configuration to support New Relic request queue (linkerd#1672).