setup HikariCP DB Pool instead of BoneCP
provide Hikari factory to allow overriding of any hikari configuration property
Merge branch 'updeps' into hikari
Merge branch 'updeps' into hikari
Merge branch 'master' into hikari
Merge branch 'master' into hikari
move to spring 4. fixes #220
[maven-release-plugin] prepare release resthub-spring-stack-2.1.5
[maven-release-plugin] prepare for next development iteration
Update CHANGELOG.md
styles and javadoc
Merge branch 'master' of https://github.com/resthub/resthub-spring-stack
improve Resthub Validation API documentation
Merge branch 'master' into spring4

Conflicts:
	pom.xml
add tests for CrudServiceImpl and add arguments validation for findAll(PageRequest) and findByIds methods. fixes #233
add tests for JpaExceptionHandler
refactor JpaHandlerException
refactor JsonValidationControllerIntegrationTest, add @JsonCreator constructor on ModelConstraint.java
add mocked ValidationControllerTest
add basic unit test for RepositoryBasedRestController