Bug 966575 part 02 - Migrate away from accessing TypeRepresentation directly r=sfink
Bug 966575 part 03 -- Extend Type Descr to include all data from type repr r=sfink
Bug 966575 part 04 -- Make TI Type Object Addendum refer to actual descriptor and not TypeRepresentation*
Bug 966575 part 4.5 -- Pretenure type descriptors and things they can reach r=sfink
Bug 966575 part 5 -- Add length to sized array descriptors r=sfink
Bug 966575 part06 -- Move field info into reserved slots, remove non-standard fieldName r=sfink
Bug 966575 part 6.5 -- Pretenure internal vectors with types / offsets r=sfink
Bug 966575 part 7 -- Replace use of TypeRepr in IonBuilder with TypeDescr r=sfink
Bug 966575 part 7.5 -- Assert descrs are pretenured in jit r=sfink
Bug 966575 part 8 -- Move kinds out of Representation into Descr r=sfink
Bug 966575 part 9 -- Remove unused type object r=sfink
Bug 966575 part 10 -- Remove uses of raw TypeRepr from SIMD r=sfink
Bug 966575 part 11 -- Remove remaining uses of typeRepr APIs in favor of direct descr access r=sfink
Bug 966575 part 12 -- Remove unused slots on typerepr object r=sfink
Bug 968866 -- Freeze user-visible offset/type vectors r=till