raise ElementParseError if required field is not defined
Merge pull request #33 from ComradeDOS/master

Update configuration for new buster release.
Merge branch 'master' of github.com:jbinary/jslix
fix small issues in the dispatcher
fix tests
typo
tests fixed
jingle: add call.accepted signal
Forwarded stanza support module
initial support of MAM
use parsed object for hook instead of created one to be sure it's validated
build top element when checking hook
make it possible to change query class
let server to pick up the resource if we have no any preferences on that
initial carbons support (XEP-0280)
always mark carbon as handled
proper result_class for MAM
if we couldn't parse result for <iq type="result"> it's still success
initial RSM support (XEP-0059)
MessageAutoIdStanza added