Added dot notation for arrays in array_pluck
Revert "Added dot notation for arrays in array_pluck"

This reverts commit 551ff41a44eb5c21b8930b4f97a7e85ba8fad15d.
Merge branch '4.1' of github.com:luukholleman/framework into 4.1
Added dot notation support in array_pluck
Added test covarage for array_pluck dot notation