Thrift package and Mutations

[ramkrishna vasudevan]

Hi Devs

Found that the thrift does not have the support for Append, also that under
mutations we have only Put and Delete.  The Append and Increment does not
fall under the mutations.

{code}
/**
 * Atomic mutation for the specified row. It can be either Put or Delete.
 */
union TMutation {
  1: optional TPut put,
  2: optional TDelete deleteSingle,
}
{code}
Was it done intentionally?  Or they are things to be done on thrift ?

Regards
Ram