1.8 to 1.9

Upgraded Hibernate from 3.2.5 to 3.6.0.
- If you have any custom Hibernate UserType or CompositeUserType, you will likely be hit by a non-backwards-compatible change in Hibernate's type system.
- See Non-backwards-compatible changes to Hibernate's Type API.
- rowCount's return a Long instead of an Integer
  - Solution: Cast to Number instead of Integer for backwards/forwards compatibility or use OpenmrsUtil.convertToInteger(Long)
Form.xslt and Form.template have been moved into FormResources. The getter and setters for those properties will throw UnsupportedOperationException
Encounter.provider (User) is replaced by Encounter.encounterProviders (list of EncounterProvider)
Encounter.setProvider(User/Person) will attempt to discover the Provider object and add that with the role of "Unknown" to the encounter
Upgraded Liquibase from 1.9.4 to 2.0.1
- If you are using <modifyColumn>, then you should instead use <modifyDataType> or other more specific tags for changing column properties
- You should follow conventions to create database-independent changesets
- As a module developer you should use - http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-2.0.xsd as the XSD or use extensions from extension portal and use this XSD: http://www.liquibase.org/xml/ns/dbchangelog-ext
- You may also use OpenMRS's liquibase extensions