Add 2.1.1 changelog (#606)

Author: Manishearth

CHANGELOG.md

@@ -1,3 +1,26 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## What's Changed in v0.1.1
+* Publish 0.1.1 by @Manishearth in [#605](https://github.com/boa-dev/temporal/pull/605)
+* fix: allow passing `&dyn TimeZoneProvider` in arguments by @jedel1043 in [#599](https://github.com/boa-dev/temporal/pull/599)
+* Update ICU4X to 2.1 by @Manishearth in [#604](https://github.com/boa-dev/temporal/pull/604)
+* Update Diplomat to 0.14.0 by @Manishearth in [#603](https://github.com/boa-dev/temporal/pull/603)
+* Update ICU4X by @Manishearth in [#601](https://github.com/boa-dev/temporal/pull/601)
+* Move to new ICU4X arithmetic code by @Manishearth in [#595](https://github.com/boa-dev/temporal/pull/595)
+* Update to ICU4X main by @Manishearth in [#596](https://github.com/boa-dev/temporal/pull/596)
+* Remove HijriSimulatedMecca / islamic-rgsa by @Manishearth in [#597](https://github.com/boa-dev/temporal/pull/597)
+* Fix a small typo in errors by @reillysiemens in [#594](https://github.com/boa-dev/temporal/pull/594)
+* Update to ICU4X's new Calendar::from_fields by @Manishearth in [#582](https://github.com/boa-dev/temporal/pull/582)
+* re-export DefaultHostSystem by @Sharktheone in [#590](https://github.com/boa-dev/temporal/pull/590)
+
+## New Contributors
+* @reillysiemens made their first contribution in [#594](https://github.com/boa-dev/temporal/pull/594)
+* @Sharktheone made their first contribution in [#590](https://github.com/boa-dev/temporal/pull/590)
+
+**Full Changelog**: https://github.com/boa-dev/temporal/compare/v0.1.0...v0.1.1
+
 ## What's Changed in v0.1.0
 * Update Diplomat to 0.13.0 by @Manishearth in [#588](https://github.com/boa-dev/temporal/pull/588)
 * Add TryFrom for PartialDuration to Duration by @nekevss in [#585](https://github.com/boa-dev/temporal/pull/585)
@@ -29,10 +52,6 @@
 
 **Full Changelog**: https://github.com/boa-dev/temporal/compare/v0.0.16...v0.1.0
 
-# Changelog
-
-All notable changes to this project will be documented in this file.
-
 ## What's Changed in v0.0.16
 * Bump versions to 0.0.16
 * Remove extraneous icu_time dependency