jongleb

### Description This PR merges [ahrefs:null](https://github.com/ahrefs/sqlgg/tree/null) branch to the [current null](https://github.com/ygrek/sqlgg/tree/null) repo branch It closes at least these issues: https://github.com/ygrek/sqlgg/issues/132 https://github.com/ygrek/sqlgg/issues/124 https://github.com/ygrek/sqlgg/issues/71 https://github.com/ygrek/sqlgg/issues/77 UPD: https://github.com/ygrek/sqlgg/issues/116 noticed that this one is...