JIRA: https://jira.spring.io/browse/INT-2260
Having a feedback about confusing with the `max-rows-per-poll` property
name and its responsibility it would be better do not mention `per-poll`
at all
* Deprecate `max-rows-per-poll` in favor of new `max-rows`
* Some code style polishing, tests improvements
* Docs polishing on the matter
* Add `What's New` bullet
* Optimize `maxRows` logic
* Document vendor-specific native SELECT limiting options
* Raise warning in the parsers about deprecated `max-rows-per-poll`
Doc polishing