Hash Updates

Remove aliases:
  findAll
  include
  index
  select

Remove methods:
  reject
  toTemplateReplacements
  update


Update methods:
  set - Accept either two arguments for key and value, or accept an object of key/values.
  This will return the Hash instance instead of the values set.
  unset - Accept either one argument for key, or accept an array of keys.
  This will return a single value if 1 key is specified or an array for more than 1 key.

Add methods:
  clear - Clears out the hash