[Pidgin] #14252: Implement XEP-0198: Stream Management

[Pidgin]

#14252: Implement XEP-0198: Stream Management
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 Reporter:  xnyhps       |       Owner:  deryni
     Type:  enhancement  |      Status:  new
Milestone:               |   Component:  XMPP
  Version:  2.7.11       |  Resolution:
 Keywords:  xep 0198     |
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Comment (by defanor):

 Here is an initial implementation of XEP-0198's acknowledgements (that's
 what I wanted it for, not covering resumption), but not sure how to make
 it visible to a user (not counting debug messages), and whether it should
 be changed/adjusted further.

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Ticket URL: <https://developer.pidgin.im/ticket/14252#comment:14>
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