Version 0.3 release.

[krystian8207]

• Add jsCallOncePerFlush function. When used prevents running conditionalJS callback during a single flush cycle (3668).
• Add commonInput and commonInputs functions that allow to gather input from multiple controllers into one.
• Add mergeCalls function that allows to use more than one jsCalls for conditionalJS.
• Add animateVisibility JS call to show and hide elements with animation.
• Add runAnimation helper callback to run element animations.
• Add once argument to conditionalJS that makes jsCall run only when condition value changed.