[docs] Emphasize that LibraryEvolution.rst is still in draft form.
[docs] Emphasize that LibraryEvolution.rst is still in draft form.

Max pointed out that GitHub's ReST rendering doesn't treat ".. warning::"
specially.

gribozavr/swift,mightydeveloper/swift,bitjammer/swift,OscarSwanros/swift,JaSpa/swift,deyton/swift,tardieu/swift,russbishop/swift,calebd/swift,kentya6/swift,shahmishal/swift,devincoughlin/swift,brentdax/swift,shajrawi/swift,roambotics/swift,khizkhiz/swift,dduan/swift,sschiau/swift,JaSpa/swift,amraboelela/swift,ben-ng/swift,MukeshKumarS/Swift,shajrawi/swift,mightydeveloper/swift,CodaFi/swift,danielmartin/swift,ken0nek/swift,sdulal/swift,LeoShimonaka/swift,amraboelela/swift,hooman/swift,frootloops/swift,austinzheng/swift,dduan/swift,manavgabhawala/swift,allevato/swift,harlanhaskins/swift,apple/swift,austinzheng/swift,therealbnut/swift,felix91gr/swift,benlangmuir/swift,IngmarStein/swift,frootloops/swift,deyton/swift,gribozavr/swift,bitjammer/swift,khizkhiz/swift,kusl/swift,SwiftAndroid/swift,ben-ng/swift,emilstahl/swift,felix91gr/swift,MukeshKumarS/Swift,harlanhaskins/swift,IngmarStein/swift,huonw/swift,ahoppen/swift,huonw/swift,danielmartin/swift,tardieu/swift,Jnosh/swift,manavgabhawala/swift,bitjammer/swift,Ivacker/swift,shahmishal/swift,arvedviehweger/swift,sschiau/swift,sdulal/swift,johnno1962d/swift,airspeedswift/swift,nathawes/swift,kentya6/swift,atrick/swift,SwiftAndroid/swift,stephentyrone/swift,atrick/swift,emilstahl/swift,manavgabhawala/swift,rudkx/swift,kstaring/swift,JGiola/swift,felix91gr/swift,cbrentharris/swift,tardieu/swift,kusl/swift,milseman/swift,CodaFi/swift,codestergit/swift,gregomni/swift,tinysun212/swift-windows,tjw/swift,mightydeveloper/swift,dreamsxin/swift,brentdax/swift,ben-ng/swift,cbrentharris/swift,sdulal/swift,frootloops/swift,huonw/swift,kperryua/swift,codestergit/swift,jmgc/swift,arvedviehweger/swift,austinzheng/swift,lorentey/swift,Ivacker/swift,practicalswift/swift,cbrentharris/swift,emilstahl/swift,alblue/swift,danielmartin/swift,OscarSwanros/swift,kusl/swift,tkremenek/swift,djwbrown/swift,LeoShimonaka/swift,calebd/swift,deyton/swift,cbrentharris/swift,gregomni/swift,deyton/swift,OscarSwanros/swift,xwu/swift,djwbrown/swift,benlangmuir/swift,mightydeveloper/swift,OscarSwanros/swift,Jnosh/swift,jtbandes/swift,Jnosh/swift,kusl/swift,uasys/swift,LeoShimonaka/swift,brentdax/swift,ken0nek/swift,zisko/swift,codestergit/swift,lorentey/swift,shajrawi/swift,jckarter/swift,jmgc/swift,ahoppen/swift,adrfer/swift,nathawes/swift,kusl/swift,shahmishal/swift,gribozavr/swift,jopamer/swift,jckarter/swift,tinysun212/swift-windows,return/swift,djwbrown/swift,tkremenek/swift,stephentyrone/swift,emilstahl/swift,KrishMunot/swift,airspeedswift/swift,xwu/swift,roambotics/swift,xedin/swift,johnno1962d/swift,milseman/swift,austinzheng/swift,slavapestov/swift,Ivacker/swift,kentya6/swift,kperryua/swift,JGiola/swift,gottesmm/swift,adrfer/swift,kstaring/swift,nathawes/swift,harlanhaskins/swift,swiftix/swift,deyton/swift,harlanhaskins/swift,arvedviehweger/swift,slavapestov/swift,practicalswift/swift,shahmishal/swift,airspeedswift/swift,xedin/swift,aschwaighofer/swift,JaSpa/swift,ahoppen/swift,jmgc/swift,LeoShimonaka/swift,xedin/swift,emilstahl/swift,arvedviehweger/swift,jmgc/swift,modocache/swift,glessard/swift,amraboelela/swift,MukeshKumarS/Swift,adrfer/swift,tjw/swift,return/swift,gmilos/swift,allevato/swift,CodaFi/swift,jckarter/swift,aschwaighofer/swift,cbrentharris/swift,atrick/swift,MukeshKumarS/Swift,natecook1000/swift,therealbnut/swift,sdulal/swift,modocache/swift,kentya6/swift,gregomni/swift,jopamer/swift,milseman/swift,gmilos/swift,frootloops/swift,russbishop/swift,devincoughlin/swift,KrishMunot/swift,modocache/swift,return/swift,shahmishal/swift,jopamer/swift,Ivacker/swift,ken0nek/swift,benlangmuir/swift,airspeedswift/swift,kusl/swift,felix91gr/swift,rudkx/swift,aschwaighofer/swift,amraboelela/swift,shajrawi/swift,huonw/swift,apple/swift,return/swift,practicalswift/swift,stephentyrone/swift,cbrentharris/swift,manavgabhawala/swift,gribozavr/swift,lorentey/swift,jtbandes/swift,khizkhiz/swift,karwa/swift,johnno1962d/swift,kperryua/swift,hughbe/swift,mightydeveloper/swift,kentya6/swift,uasys/swift,hooman/swift,mightydeveloper/swift,kstaring/swift,devincoughlin/swift,cbrentharris/swift,manavgabhawala/swift,slavapestov/swift,xwu/swift,therealbnut/swift,milseman/swift,kentya6/swift,khizkhiz/swift,aschwaighofer/swift,mightydeveloper/swift,nathawes/swift,slavapestov/swift,bitjammer/swift,IngmarStein/swift,stephentyrone/swift,IngmarStein/swift,swiftix/swift,russbishop/swift,airspeedswift/swift,parkera/swift,austinzheng/swift,johnno1962d/swift,benlangmuir/swift,jckarter/swift,atrick/swift,Jnosh/swift,felix91gr/swift,swiftix/swift,stephentyrone/swift,gottesmm/swift,airspeedswift/swift,gribozavr/swift,felix91gr/swift,LeoShimonaka/swift,manavgabhawala/swift,kperryua/swift,gottesmm/swift,swiftix/swift,parkera/swift,hooman/swift,shahmishal/swift,frootloops/swift,OscarSwanros/swift,sdulal/swift,jtbandes/swift,calebd/swift,parkera/swift,gmilos/swift,return/swift,jopamer/swift,Jnosh/swift,natecook1000/swift,arvedviehweger/swift,hughbe/swift,tardieu/swift,allevato/swift,cbrentharris/swift,uasys/swift,harlanhaskins/swift,LeoShimonaka/swift,CodaFi/swift,parkera/swift,SwiftAndroid/swift,alblue/swift,JGiola/swift,adrfer/swift,roambotics/swift,MukeshKumarS/Swift,tkremenek/swift,Ivacker/swift,amraboelela/swift,jmgc/swift,dduan/swift,tardieu/swift,xedin/swift,tjw/swift,johnno1962d/swift,amraboelela/swift,ahoppen/swift,hooman/swift,MukeshKumarS/Swift,tjw/swift,SwiftAndroid/swift,djwbrown/swift,roambotics/swift,slavapestov/swift,brentdax/swift,tinysun212/swift-windows,karwa/swift,shajrawi/swift,natecook1000/swift,tinysun212/swift-windows,aschwaighofer/swift,hughbe/swift,LeoShimonaka/swift,slavapestov/swift,karwa/swift,Ivacker/swift,calebd/swift,kentya6/swift,Jnosh/swift,xedin/swift,atrick/swift,xedin/swift,kusl/swift,khizkhiz/swift,calebd/swift,gottesmm/swift,lorentey/swift,practicalswift/swift,natecook1000/swift,danielmartin/swift,KrishMunot/swift,glessard/swift,khizkhiz/swift,gottesmm/swift,jopamer/swift,jtbandes/swift,kstaring/swift,karwa/swift,rudkx/swift,jtbandes/swift,huonw/swift,IngmarStein/swift,OscarSwanros/swift,emilstahl/swift,tkremenek/swift,allevato/swift,kstaring/swift,brentdax/swift,modocache/swift,roambotics/swift,apple/swift,alblue/swift,swiftix/swift,jmgc/swift,ben-ng/swift,russbishop/swift,KrishMunot/swift,dreamsxin/swift,therealbnut/swift,jckarter/swift,ahoppen/swift,zisko/swift,gribozavr/swift,uasys/swift,OscarSwanros/swift,aschwaighofer/swift,austinzheng/swift,practicalswift/swift,bitjammer/swift,lorentey/swift,dduan/swift,devincoughlin/swift,nathawes/swift,return/swift,harlanhaskins/swift,hughbe/swift,xedin/swift,milseman/swift,KrishMunot/swift,JGiola/swift,russbishop/swift,djwbrown/swift,adrfer/swift,zisko/swift,apple/swift,gottesmm/swift,tkremenek/swift,kstaring/swift,brentdax/swift,LeoShimonaka/swift,rudkx/swift,sschiau/swift,aschwaighofer/swift,bitjammer/swift,ahoppen/swift,parkera/swift,parkera/swift,khizkhiz/swift,gribozavr/swift,SwiftAndroid/swift,kperryua/swift,karwa/swift,uasys/swift,atrick/swift,allevato/swift,gottesmm/swift,JaSpa/swift,emilstahl/swift,allevato/swift,russbishop/swift,zisko/swift,xwu/swift,adrfer/swift,adrfer/swift,tinysun212/swift-windows,SwiftAndroid/swift,practicalswift/swift,zisko/swift,return/swift,ken0nek/swift,uasys/swift,swiftix/swift,Jnosh/swift,johnno1962d/swift,alblue/swift,shajrawi/swift,calebd/swift,hughbe/swift,therealbnut/swift,hughbe/swift,glessard/swift,tjw/swift,ken0nek/swift,slavapestov/swift,swiftix/swift,sdulal/swift,milseman/swift,jopamer/swift,hooman/swift,hooman/swift,nathawes/swift,deyton/swift,JaSpa/swift,johnno1962d/swift,felix91gr/swift,harlanhaskins/swift,SwiftAndroid/swift,kperryua/swift,parkera/swift,hooman/swift,dduan/swift,manavgabhawala/swift,milseman/swift,lorentey/swift,uasys/swift,kstaring/swift,xwu/swift,gmilos/swift,lorentey/swift,tkremenek/swift,parkera/swift,devincoughlin/swift,therealbnut/swift,jopamer/swift,modocache/swift,tjw/swift,dduan/swift,djwbrown/swift,gregomni/swift,sdulal/swift,alblue/swift,sschiau/swift,airspeedswift/swift,codestergit/swift,glessard/swift,gmilos/swift,huonw/swift,jtbandes/swift,austinzheng/swift,lorentey/swift,jckarter/swift,shajrawi/swift,calebd/swift,shajrawi/swift,tinysun212/swift-windows,bitjammer/swift,codestergit/swift,devincoughlin/swift,codestergit/swift,natecook1000/swift,benlangmuir/swift,gmilos/swift,arvedviehweger/swift,KrishMunot/swift,JGiola/swift,natecook1000/swift,tkremenek/swift,roambotics/swift,xwu/swift,Ivacker/swift,rudkx/swift,ben-ng/swift,CodaFi/swift,karwa/swift,glessard/swift,sdulal/swift,hughbe/swift,practicalswift/swift,apple/swift,danielmartin/swift,Ivacker/swift,IngmarStein/swift,rudkx/swift,sschiau/swift,dduan/swift,xwu/swift,alblue/swift,codestergit/swift,IngmarStein/swift,alblue/swift,djwbrown/swift,MukeshKumarS/Swift,benlangmuir/swift,kusl/swift,gmilos/swift,practicalswift/swift,stephentyrone/swift,gregomni/swift,apple/swift,amraboelela/swift,jckarter/swift,kentya6/swift,sschiau/swift,JGiola/swift,brentdax/swift,frootloops/swift,tardieu/swift,tjw/swift,glessard/swift,mightydeveloper/swift,therealbnut/swift,emilstahl/swift,zisko/swift,arvedviehweger/swift,sschiau/swift,allevato/swift,nathawes/swift,jmgc/swift,ben-ng/swift,gribozavr/swift,JaSpa/swift,tinysun212/swift-windows,devincoughlin/swift,deyton/swift,shahmishal/swift,gregomni/swift,ken0nek/swift,zisko/swift,kperryua/swift,CodaFi/swift,modocache/swift,danielmartin/swift,tardieu/swift,karwa/swift,danielmartin/swift,stephentyrone/swift,devincoughlin/swift,huonw/swift,sschiau/swift,karwa/swift,russbishop/swift,KrishMunot/swift,CodaFi/swift,modocache/swift,natecook1000/swift,jtbandes/swift,ken0nek/swift,JaSpa/swift,frootloops/swift,shahmishal/swift,ben-ng/swift,xedin/swift