Finish 2.3.1
Return old value in setReturnFormat functions
Ignore .idea folder
Add Changelog entry for #4
Fix #4 Merge branch 'feature/4-setter-functions-return-value' into develop
Rearrange class methods
Merge branch 'master'

Conflicts:
	classes/connector.mysql.class.php
	classes/connector.mysql.easy.class.php
	classes/connector.mysqli.class.php
	classes/monty.class.php
	composer.json
Set is_dirty flags correctly
Remove unnecessary is_dirty setting in queryall
Remove double class methods
Update README
Ignore test files
Only respect dirty flags for selects. Fix #10
Add changelog entry for #10
Drop "IT" from copyright
Set release date
Finish 2.3.2