add a contributing file
Merge pull request #658 from d1rk/contributing

add a contributing file
renamed .wiki to .md
Make `util\Set::expand()` to be consistent over ordering.
Merge pull request #710 from jails/pr57

Make `util\Set::expand()` to be consistent over ordering.
Fix randomly failing test (#692), second attempt.
Merge pull request #711 from jails/pr57

Fix randomly failing test (#692), second attempt.
Fix for _processDotPath in Environment class. Fatal error if we try to get value from array but it variable is not array
Micro optimization
Merge pull request #713 from jails/pr57

Micro optimization
Merge pull request #709 from v-v-vishnevskiy/master

Fix for _processDotPath in Environment class.
Fix #577
Fix another randomly failing test.
Merge pull request #716 from jails/pr58

Fix #577
Fix randomly failing tests.
`data\source\Database::fields()` && `data\model\Query::fields()` refactoring

- Additionnal tests for `data\model\Query::fields()`
- Some cleanup & more test cases for #705
Merge pull request #719 from jails/pr58

Fix randomly failing tests.
Merge pull request #718 from jails/pr59

Fix another randomly failing test.
Fix #577
Merge pull request #720 from jails/pr58

Fix #577