deprecations for outlet, render buffer, enumerable utils, and template prop
deprecations for outlet, render buffer, enumerable utils, and template prop

add arraycomputedproperty and didinsertelement deprecations

incorporate review comments

additional review fixes

kpfefferle/website,SaladFork/emberjs-website,josemarluedke/ember-website,bmac/website,SaladFork/emberjs-website,bmac/website,josemarluedke/ember-website,josemarluedke/ember-website,zeppelin/emberjs-website,kpfefferle/website,zeppelin/emberjs-website,bmac/website,SaladFork/emberjs-website,bmac/website,workmanw/ember-website,SaladFork/emberjs-website,AaronSikes/website,josemarluedke/ember-website,workmanw/ember-website,workmanw/ember-website,zeppelin/emberjs-website,workmanw/ember-website,kpfefferle/website,AaronSikes/website,zeppelin/emberjs-website,AaronSikes/website