Restructure class folder.

Signed-off-by: Toha <tohenk@yahoo.com>
Merge branch 'master' of github.com:johmue/mysql-workbench-schema-exporter
Add logging facility (console, file).

Signed-off-by: Toha <tohenk@yahoo.com>
Doctrine Annotation: always generate M2M table entity.

Signed-off-by: Toha <tohenk@yahoo.com>
Doctrine Annotation: Owning side association.

Signed-off-by: Toha <tohenk@yahoo.com>