find or create returns additional flag
update changelog
Merge pull request #648 from innofluence/findorcreateFlag

findOrCreate returns additional flag to tell whether the entry was found or created
Refactor quoting of identifiers and strings
Simplify quoting
Clean up and make more consistent the quoting
Fix some more broken tests by allowing Postgres schema support
Deal with the fact that in Postgres, tables and schemas are separate identifiers
Brute force fix for carrying of the `this` parameter
Fix test setup and use `this` to make sure options aren't lost when calling functions
Use `this` in MySQL and SQLite as well for consistency
Merge branch 'case-insensitive' of github.com:optilude/sequelize into case-insensitive