update changelog and bump version

CHANGELOG.md

@@ -4,7 +4,13 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
+
+# [0.3.4] 2017-01-06
 * fixed has_many through preloads when join association doesn’t exist
+* include [`JSON.mapping`](https://crystal-lang.org/api/0.20.4/JSON.html#mapping-macro) in schema
+
+# [0.3.3] 2016-12-31
+* close DB::ResultSet after usage (to free pool)
 
 # [0.3.1] 2016-12-28
 * Mysql Adapter
@@ -35,6 +41,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 * Query
 * Postgres Adapter
 
+[0.3.4]: https://github.com/fridgerator/crecto/compare/v0.3.3...v0.3.4
+[0.3.3]: https://github.com/fridgerator/crecto/compare/v0.3.1...v0.3.3
 [0.3.1]: https://github.com/fridgerator/crecto/compare/v0.3.0...v0.3.1
 [0.3.0]: https://github.com/fridgerator/crecto/compare/v0.2.0...v0.3.0
 [0.2.0]: https://github.com/fridgerator/crecto/compare/0.1.0...v0.2.0

src/crecto/version.cr

@@ -1,3 +1,3 @@
 module Crecto
-  VERSION = "0.3.2"
+  VERSION = "0.3.4"
 end