[dconf: 7/7] Merge branch 'patch/service-check' into 'master'

[Daniel Playfair Cal <danielplayfaircal src gnome org>]

commit a1da64420c365004da1049199b03e6eca9c5f447
Merge: 7ad890f f3104f7
Author: Daniel Playfair Cal <daniel playfair cal gmail com>
Date:   Mon Dec 30 00:38:58 2019 +0000

    Merge branch 'patch/service-check' into 'master'
    
    Service: only emit changed signals when values change
    
    See merge request GNOME/dconf!3

 common/dconf-changeset.c | 100 +++++++++++++++++++----
 common/dconf-changeset.h |   3 +
 service/dconf-writer.c   |  26 +++---
 tests/changeset.c        | 140 ++++++++++++++++++++++++++++++++
 tests/test-dconf.py      |   1 -
 tests/writer.c           | 205 +++++++++++++++++++++++++++++++++++++++++++++++
 6 files changed, 449 insertions(+), 26 deletions(-)
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