Владислав Бекчурин

**Describe the bug** If code has a special string (see code below) the rope falls with error. **To Reproduce** Steps to reproduce the behavior: 1. Code before refactoring: ``` aa...

It would be nice to make query like: ``` SELECT a[2:4], a[6:8] ``` UPD if it possible to make query lile: ``` SELECT a['id':'name'] ``` it will be great!

Hello, unify is a great tool. I'd like to add quote escape and close issue #12.

It will be good to add possibility to work with any db to be truly agnostic. It may be plugin model or some custom python code.