CORE-1070
Preconditions should support parameters
Fixed quote char
Json and Yaml changelog parse support generally works
Added new snakeyaml dependency for yaml/json changelog formats
Merge remote-tracking branch 'origin/master'

Conflicts:
	liquibase-integration-tests/src/test/java/liquibase/dbtest/h2/H2IntegrationTest.java
Merged in origin/master