Pyliquibase

What's New
- Providing defaultsFile is optional now. Custom python code on top of liquibase is reduced. See https://github.com/memiiso/pyliquibase/issues/79
- Code improvements added

What's Changed
* Reduce custom python code by ismailsimsek in https://github.com/memiiso/pyliquibase/pull/80
* Improve downloading additional library files by ismailsimsek in https://github.com/memiiso/pyliquibase/pull/81


**Full Changelog**: https://github.com/memiiso/pyliquibase/compare/2.2.0...2.3.0

What's Changed
* Improve logging by ismailsimsek in https://github.com/memiiso/pyliquibase/pull/76
* Simplify user provided liquibaseDir usage by ismailsimsek in https://github.com/memiiso/pyliquibase/pull/75
* Remove user provided liquibaseHubMode, logLevel arguments by ismailsimsek in https://github.com/memiiso/pyliquibase/pull/77
* Delete upgrade_liquibase.sh, Not used anymore by ismailsimsek in https://github.com/memiiso/pyliquibase/pull/78


**Full Changelog**: https://github.com/memiiso/pyliquibase/compare/2.1.0...2.2.0