Update changelog to 2.4.0
Revert "Merge pull request #472 from jimmyhchan/OPP"

This reverts commit dcc3d350214ab270bffe3a957f3b438b429651b4, reversing
changes made to ad2d39fd4f2e29223d27b94a19512f2bab45d05e.
Merge pull request #493 from prashn64/changelog

Update changelog to 2.4.0
Merge pull request #494 from sethkinast/revert-prototype-lookup-prevention

Revert "Merge pull request #472 from jimmyhchan/OPP"  This will allow dust references to look up the object's prototype chain again.
Release v2.4.1