[geary: 2/2] Merge branch 'wip/handy-sub-module' into 'mainline'

[Michael Gratton <mjog src gnome org>]

commit 72e6bd6fe397a1faf3408c2a18a4b710925884a1
Merge: b24ac806 5027e039
Author: Michael Gratton <mike vee net>
Date:   Fri Apr 26 09:24:51 2019 +0000

    Merge branch 'wip/handy-sub-module' into 'mainline'
    
    Add a sub{module,project} for handy for those who don't have it
    
    See merge request GNOME/geary!226

 .gitmodules          |  3 +++
 meson.build          | 30 +++++++++++++++++++++++++-----
 subprojects/libhandy |  1 +
 3 files changed, 29 insertions(+), 5 deletions(-)
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