Merge branch 'release/0.11.1' into develop
Adds missing parameter.
Adds examples for dbexport.
Support MySQL #1

Adds MySQL support.
Fixes list of databases in MySQL.
Changes example results to be displayed as tables.
Next try.
Another one.
Fixes the documentation with tables.
Adds documentation for MySQL.
Test resources cleanup.
Adds tests for the differ.
Adds/updates tests of the exporter.
Updates the differ tests and documentation with more sophisticated examples.
Removes backup table.
Place notes at the top of the example for better understanding the example.
Fixes README.md.
Fixes default values of method parameters.
Fixes error handling for dbnav.
Version bump to 0.12. Adds MySQL support.