[geary: 7/7] Merge branch 'wip/email-flag-refinement' into 'master'

[Michael Gratton <mjog src gnome org>]

commit d18839759267619be11d3e63709325aa9b1ffa8f
Merge: 2f48326b 7c05f5d3
Author: Michael Gratton <mike vee net>
Date:   Wed Feb 13 14:30:41 2019 +0000

    Merge branch 'wip/email-flag-refinement' into 'master'
    
    Email flags not always updated
    
    See merge request GNOME/geary!105

 src/engine/api/geary-client-service.vala     |   3 +-
 src/engine/imap-db/imap-db-folder.vala       |  47 ++--
 test/engine/imap-db/imap-db-folder-test.vala | 321 +++++++++++++++++++++++++++
 test/meson.build                             |   1 +
 test/test-engine.vala                        |   1 +
 5 files changed, 358 insertions(+), 15 deletions(-)
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