improved exception handling
added inviteclientdialog tests
important case fix
added exception handling
moved setlastresponse to processresponse

added message sequence numbering
important createrequest bigfix
added sequence nr support

added override sendrequest for sequence nr support
sequence nr bugfix in processresponseoverride
added errorform
added exception handling
changed sipinviteclientdialog tests
ctx now invokes processresponse on dialog

ctx now invokes processresponse on dialog instead of setlastrresponse