CORE-1748: generateChangeLog in maven now respects the outputDefaultCatalog and outputDefaultSchema properties
Multiple schema based multi-tenant

This way is possible to use this:

	<bean id="liquibase" class="liquibase.integration.spring.MultiTenantSpringLiquibase" depends-on="someResourceWithTheListOfSchemas">
	    <property name="dataSource" ref="dataSource"/>
	    <property name="changeLog" value="classpath:database-changelog.json"/>        
	    <property name="schemas" value="#{someResourceWithTheListOfSchemas.list}" />	    
	</bean>
	
If accepted I will take a further look in the rest of the code, including tests before proposing a new pull request.
Fixing NPE in the ChangeLogSyncVisitor when no listener is given at the time of construction. Unit tests created to test problem and verify solution.
CORE-1823 Search for liquibase.properties in classpath
CORE-1782 dropALL fails when tables are referenced by other tables in another schema

Drop tables with Cascade option
CORE-1765 Failed to drop a VIEW pointing on not existing table from another schema
CORE-1753 HSQLDB 1.8 does not support catalogs
CORE-1744 Derby UpdateSQL not including creating databasechangeloglock table if needed
CORE-1739 Liquibase ignores Oracle varchar precision
CORE-1733 Data in diffChangeLog coming through as one row per changeSet
CORE-1715 2 -> 3.1 migration, 3.1 errors if there are single quotes in comments
CORE-1563 dropAll does not delete Sequences on Derby
CORE-1798 Invalid type syntax in Informix for Int(10) and SMALLINT(5) and FRACTION(3)
Merge pull request #274 from mattbertolini/bug/npe-changelogsyncvisitor

Fix NPE in ChangeLogSyncVisitor when no ChangeLogSyncListener is given
Merge pull request #273 from rsilva4/patch-1

Multiple schema based multi-tenant
CORE-1772 Informix cannot drop constraints
CORE-461 Wrong datatypes for timestamps generated with generateChangeLog
CORE-461 Wrong datatypes for timestamps generated with generateChangeLog
Make it easier to override default classLoader
UUID not worth the performance overhead for object identifiers