checkIntentionIsNotAvailable() method added
(cherry picked from commit 97a1bc2)
checkTextHasNoErrors overloaded
(cherry picked from commit 06b6637)
Bug fixed: checking type of operands before simplifying
(cherry picked from commit e1fd428)
ScalaPsiUtil.needParentheses() method rewritten
(cherry picked from commit 5070d15)
filter + map replaced by collect
(cherry picked from commit f80c858)
Some commented lines deleted