* Fixed ViewExecutionNode retrieval with deleted documents present in view
* Ported solution from 3.4 branch
* Changed index store in collection from vector to set. To make reversable indexes always last to execute
* Fixed re-enter hung
* Index storage fix
* Made index order deterministic
* Fix Mac build
* Added tests for index reversal
* Fixed Mac build
* Code cleanup
* Some cleanup
* Removed some redundand copy constructor calls
* Applied review comments
* Applied review comments
Dronplane