Removed:
  std.io.InStream.readUntilDelimiterBuffer

Deprecated:
  std.ArrayList.toSlice
  std.ArrayList.toSliceConst
  std.ArrayList.at
  std.ArrayList.ptrAt
  std.ArrayList.setOrError
  std.ArrayList.set
  std.ArrayList.swapRemoveOrError
  std.Buffer.toSlice
  std.Buffer.toSliceConst
  std.io.InStream.readFull => std.io.InStream.readAll
  std.io.InStream.readAllBuffer

New:
  std.ArrayList.span
  std.ArrayList.expandToCapacity
  std.Buffer.span
  std.io.InStream.readUntilDelimiterArrayList