Add CHANGELOG entry for new isBetween Date extension.
Add CHANGELOG entry for new isBetween Date extension.

tache/SwifterSwift,SwifterSwift/SwifterSwift,LucianoPAlmeida/SwifterSwift,SwifterSwift/SwifterSwift,omaralbeik/SwifterSwift,tache/SwifterSwift,omaralbeik/SwifterSwift,LucianoPAlmeida/SwifterSwift,SwifterSwift/SwifterSwift