Most AB tests run with just control and treatment variations. These were curiously represented in the Tracks code as .control and .treatment(nil), respectively. That nil is quite confusing for such a common case.
This PR updates the representation of the common case to simply be .treatment. Custom cases are now represented with a separate enum value.
Most AB tests run with just
controlandtreatmentvariations. These were curiously represented in the Tracks code as.controland.treatment(nil), respectively. Thatnilis quite confusing for such a common case.This PR updates the representation of the common case to simply be
.treatment. Custom cases are now represented with a separate enum value."control".control.control"treatment".treatment(nil).treatment"purple_button".treatment("purple_button").customTreatment(name: "purple_button")Fixes #226