Update CHANGES.md to use reference-style links

CHANGES.md

@@ -4,18 +4,28 @@ Here you can find the release notes for this project. Please note that list of r
 
 ## v1.1.0 (2019-06-05)
 
-* [FEATURE] Add support "unsafe to use" endpoints (#18)
-* [FEATURE] Update SharedCodegen to fallback to title usage if x-model is not present (#21)
-* [FEATURE] Add support for composed models and reference models (#22)
-* [FEATURE] Extended visibility of Custom Moshi Adapters (#30)
-* [BUGFIX] Fix model sanitisation (#19)
-* [BUGFIX] Ensure that retrofit body is not nullable (#20)
-* [BUGFIX] Read spec version from SwaggerSpec via codegen tools and allow to set `DEFAULT_VERSION` constant (#23)
-* [BUGFIX] Fix issue with MultiPart request and file uploads (#26)
-* [BUGFIX] Fix for square brackets in the operation name (#32)
+* 🎁 Update SharedCodegen to fallback to title usage if x-model is not present [#21]
+* 🎁 Add support for composed models and reference models [#22]
+* 🎁 Extended visibility of Custom Moshi Adapters [#30]
+* 🐛 Fix model sanitisation [#19]
+* 🐛 Ensure that retrofit body is not nullable [#20]
+* 🐛 Read spec version from SwaggerSpec via codegen tools and allow to set `DEFAULT_VERSION` constant [#23]
+* 🐛 Fix issue with MultiPart request and file uploads [#26]
+* 🐛 Fix for square brackets in the operation name [#32]
 
 Thanks to @cortinico, @MatthewTPage, @GuilhE, @macisamuele and @redwarp for the support with this release.
 
 ## v1.0.0 (2019-01-04)
 
 * Initial Release of swagger-gradle-codegen
+
+### Link Section
+
+[#19]: https://github.com/Yelp/swagger-gradle-codegen/pull/19/
+[#20]: https://github.com/Yelp/swagger-gradle-codegen/pull/20/
+[#21]: https://github.com/Yelp/swagger-gradle-codegen/pull/21/
+[#22]: https://github.com/Yelp/swagger-gradle-codegen/pull/22/
+[#23]: https://github.com/Yelp/swagger-gradle-codegen/pull/23/
+[#26]: https://github.com/Yelp/swagger-gradle-codegen/pull/26/
+[#30]: https://github.com/Yelp/swagger-gradle-codegen/pull/30/
+[#32]: https://github.com/Yelp/swagger-gradle-codegen/pull/32/