Pydbml

- Fix: allow pk in named indexes (thanks pierresouchay for the contribution)

- New: Sticky notes syntax (DBML v3.2.0)
- Fix: Table header color was not rendered in `dbml()` (thanks tristangrebot for the contribution)
- New: allow array column types (DBML v3.1.0)
- New: allow double quotes in expressions (DBML v3.1.2)
- Fix: recursion in object equality check
- New: don't allow duplicate refs even if they have different inline method (DBML v3.1.6)

- Fix: enum collision from different schemas. Thanks ewdurbin for the contribution

- Fix: (27) allowing comments after Tables, Enums, etc. Thanks marktaff for reporting

- Fix: removing indentation bug

- Fix: (26) bug in note empty line stripping, thanks Jaschenn for reporting
- New: get_references_for_sql table method