version 0.9.26

 - Mailer: SkinnyMailer is newly added #22 (initial version by @BlackPrincess)
 - ORM: Finder#countAll -> just count #57
 - ORM: Enabled count(fieldName) #57
 - ORM: Added calculations(sum,average,min,max) #57
 - Session: after bug fixes now SkinnySession is mostly stable
 - MVC: Enabled switching layout in action methods
 - typesafe-config 1.0.2 -> 1.2.0