prepare for release 2.11.1 (#214)

Update changelog and increment version for release 2.11.1

Author: brayniac

CHANGELOG.md

@@ -1,5 +1,9 @@
 # [Unreleased]
 
+# [2.11.1] - 2021-02-24
+## Fixed
+- HTTP and Memcache samplers reporting incorrect percentiles.
+
 # [2.11.0] - 2021-01-11
 ## Added
 - Nvidia GPU sampler which uses the Nvidia Management Library (NVML) to gather
@@ -160,7 +164,9 @@ characteristics.
 
 Initial release.
 
-[Unreleased]: https://github.com/twitter/rezolus/compare/v2.10.0...HEAD
+[Unreleased]: https://github.com/twitter/rezolus/compare/v2.11.1...HEAD
+[2.11.1]: https://github.com/twitter/rezolus/compare/v2.11.0...v2.11.1
+[2.11.0]: https://github.com/twitter/rezolus/compare/v2.10.0...v2.11.0
 [2.10.0]: https://github.com/twitter/rezolus/compare/v2.9.0...v2.10.0
 [2.9.0]: https://github.com/twitter/rezolus/compare/v2.8.0...v2.9.0
 [2.8.0]: https://github.com/twitter/rezolus/compare/v2.7.1...v2.8.0

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "rezolus"
-version = "2.11.1-alpha.0"
+version = "2.11.1"
 authors = ["Brian Martin <[email protected]>"]
 license = "Apache-2.0"
 build = "build.rs"