doc: deprecation policy.
doc: deprecation policy.

yavor-atanasov/hawkey,megaumi/hawkey,rholy/hawkey,mluscon/hawkey,mizdebsk/hawkey,Conan-Kudo/hawkey,yavor-atanasov/hawkey,mluscon/hawkey,jsilhan/hawkey,jsilhan/hawkey,megaumi/hawkey,megaumi/hawkey,MichaelMraka/hawkey,rpm-software-management/hawkey,rholy/hawkey,mizdebsk/hawkey,yavor-atanasov/hawkey,ignatenkobrain/hawkey,yavor-atanasov/hawkey,jsilhan/hawkey,mluscon/hawkey,rpm-software-management/hawkey,rpm-software-management/hawkey,megaumi/hawkey,jsilhan/hawkey,mizdebsk/hawkey,MichaelMraka/hawkey,mizdebsk/hawkey,rpm-software-management/hawkey,ignatenkobrain/hawkey,MichaelMraka/hawkey,MichaelMraka/hawkey,Conan-Kudo/hawkey,Conan-Kudo/hawkey,ignatenkobrain/hawkey,rholy/hawkey,Conan-Kudo/hawkey,mluscon/hawkey,rholy/hawkey,ignatenkobrain/hawkey