Bug with NOT IN condition (missing parenthesis)

[Zheness]

Hello,

When i'm using a condition with a NOT IN, the parenthesis are missing.

SELECT * FROM company WHERE ids NOT IN :companyTypes AND status = "on"

With parameter ['companyTypes' => [1,2,3]].

Result:

SELECT * FROM   `company` WHERE   (`ids` NOT IN   '3','5','6','7','8','9','13','17') AND (    `status` =   "on")

Also, there is no parenthesis at all when no second condition:

SELECT * FROM company WHERE ids NOT IN :companyTypes

Result:

SELECT  * FROM   `company` WHERE     `ids` NOT IN   '3','5','6','7','8','9','13','17'

Hope you can fix quickly :)

Thank you !

[moufmouf]

Closed with #59 and #60