release: 4.0.0

- add initial rails 6.0 and 6.1 support
- drop rails < 5.2 support

Author: urkle

README.md

@@ -137,6 +137,7 @@ Which defines the rake task `create_databases` and also a task for travis-ci
 
 Release notes for schema_dev versions:
 
+* **4.0.0** - Drop support for AR < 5.2 and add AR 6.0 and 6.1
 * **3.13.1** - Adjust travis.yml generation to work with mysql again
 * **3.13.0** - Change coveralls gem and test against newer ruby versions
 * **3.12.1** - fix simple case when only one postgresql version

lib/schema_dev/version.rb

@@ -1,3 +1,3 @@
 module SchemaDev
-  VERSION = "3.13.1"
+  VERSION = "4.0.0"
 end