v2.19.0

Changes

• CPMStar: use iframe based usersync (#3660)
• Rubicon: Remove buyeruid logic (#3683)
• Mabidder: set geoscope to CAN (#3687)
• Unruly: dynamic bid response array size (#3644)
• SmartHub: add jdpmedia alias (#3689)
• Pubmatic:: Pass imp.ext.gpid to SSP (#3669)
• Hello World Sample (#3326)

Contributors

@JoshuaMGoldstein, @SerhiiNahornyi, @ecdrsvc, @bhainesnexxen, @SmartHubSolutions, @AvinashKapre, @zhongshixi and @bretg