Prepares v0.12.0 release (#1126)

Author: vgapeyev

CHANGELOG.md

@@ -26,7 +26,7 @@ Thank you to all who have contributed!
 -->
 
 
-## [Unreleased]
+## [0.12.0] - 2023-06-14
 
 ### Added
 

README.md

@@ -31,7 +31,7 @@ This project is published to [Maven Central](https://search.maven.org/artifact/o
 
 | Group ID      | Artifact ID           | Recommended Version |
 |---------------|-----------------------|---------------------|
-| `org.partiql` | `partiql-lang-kotlin` | `0.11.0`             | 
+| `org.partiql` | `partiql-lang-kotlin` | `0.12.0`            | 
 
 
 For Maven builds, add the following to your `pom.xml`:

gradle.properties

@@ -1,5 +1,5 @@
 group=org.partiql
-version=0.11.1-SNAPSHOT
+version=0.12.0
 
 ossrhUsername=EMPTY
 ossrhPassword=EMPTY