[docs] "Retroactive protocol refinement" in generics manifesto.
[docs] "Retroactive protocol refinement" in generics manifesto.

"Retroactive protocol refinement" is an accurate title for the section.

"Conditional conformances via protocol extensions" is not accurate
because the protocol refinements may not be conditional.

harlanhaskins/swift,hooman/swift,allevato/swift,gregomni/swift,apple/swift,parkera/swift,jckarter/swift,hooman/swift,apple/swift,gregomni/swift,jckarter/swift,glessard/swift,atrick/swift,airspeedswift/swift,tkremenek/swift,benlangmuir/swift,gregomni/swift,hooman/swift,glessard/swift,allevato/swift,airspeedswift/swift,CodaFi/swift,jmgc/swift,stephentyrone/swift,gregomni/swift,parkera/swift,hooman/swift,benlangmuir/swift,nathawes/swift,tkremenek/swift,CodaFi/swift,xwu/swift,jmgc/swift,harlanhaskins/swift,ahoppen/swift,JGiola/swift,jckarter/swift,parkera/swift,roambotics/swift,harlanhaskins/swift,JGiola/swift,ahoppen/swift,airspeedswift/swift,CodaFi/swift,airspeedswift/swift,rudkx/swift,nathawes/swift,atrick/swift,aschwaighofer/swift,parkera/swift,CodaFi/swift,benlangmuir/swift,rudkx/swift,ahoppen/swift,nathawes/swift,parkera/swift,aschwaighofer/swift,rudkx/swift,roambotics/swift,rudkx/swift,JGiola/swift,aschwaighofer/swift,CodaFi/swift,airspeedswift/swift,glessard/swift,allevato/swift,stephentyrone/swift,tkremenek/swift,xwu/swift,roambotics/swift,aschwaighofer/swift,glessard/swift,benlangmuir/swift,jmgc/swift,harlanhaskins/swift,allevato/swift,ahoppen/swift,allevato/swift,allevato/swift,xwu/swift,stephentyrone/swift,roambotics/swift,aschwaighofer/swift,glessard/swift,xwu/swift,harlanhaskins/swift,aschwaighofer/swift,jmgc/swift,harlanhaskins/swift,jckarter/swift,harlanhaskins/swift,jckarter/swift,rudkx/swift,JGiola/swift,aschwaighofer/swift,atrick/swift,tkremenek/swift,apple/swift,allevato/swift,gregomni/swift,parkera/swift,atrick/swift,xwu/swift,jmgc/swift,tkremenek/swift,nathawes/swift,apple/swift,roambotics/swift,rudkx/swift,apple/swift,atrick/swift,jmgc/swift,stephentyrone/swift,tkremenek/swift,JGiola/swift,xwu/swift,tkremenek/swift,glessard/swift,nathawes/swift,airspeedswift/swift,roambotics/swift,jmgc/swift,ahoppen/swift,gregomni/swift,nathawes/swift,hooman/swift,benlangmuir/swift,apple/swift,ahoppen/swift,stephentyrone/swift,nathawes/swift,CodaFi/swift,parkera/swift,xwu/swift,JGiola/swift,CodaFi/swift,benlangmuir/swift,stephentyrone/swift,parkera/swift,airspeedswift/swift,hooman/swift,stephentyrone/swift,hooman/swift,atrick/swift,jckarter/swift,jckarter/swift