[geary] (30 commits) ...Merge branch 'wip/composer-folks' into 'mainline'

[Michael Gratton <mjog src gnome org>]

Summary of changes:

  0b734f7... Don't load all engine contacts on startup (*)
  2ff2d24... Clean up ContactFlag API (*)
  809f664... ContactStoreImpl unit tests (*)
  cb8150c... Remove existing contact harvesting mechanism (*)
  5ab35da... Clean up contact importance API (*)
  bc64cd9... Provide a way to access actual args for an expected mock ca (*)
  91caff4... Add support for uint args in expected calls in MockObject (*)
  96cbb83... Ensure Geary.Contact real names are distinct from their add (*)
  65ab379... Implement new contact harvester for the engine (*)
  03b5fce... Pass email to a contact harvester instance when persisting  (*)
  5e13dd0... Replace Db.PrepareDelegate with a subclass virtual function (*)
  66a664f... Clean up ImapDB.Account ctor/open API a bit (*)
  71cb7fc... Add Geary.ContactStore.search method, impementation and tes (*)
  3007ac5... Do prefix-only searching in ContactStoreImpl to impove resu (*)
  cc27bae... Convert composer email autocomplete to use search for match (*)
  7a14f54... Remove now unused ContactListStoreCache class (*)
  ef54509... Clean up context objects passed to ComposerWidget's constru (*)
  7c4d711... Decouple Application.Contact from Geary.Contact (*)
  f49f885... Add Application.ContactStore.search method (*)
  6db466e... Convert ContactEntryCompletion to use app contacts (*)
  dd9d066... Ensure Geary.ContactStoreImpl validates UTF-8 strings (*)
  5a0c105... Composer contact autocomplete tweaks (*)
  788a061... Ensure test drivers all have sane locales set (*)
  4e1aa32... Ensure Geary.ContactStoreImpl handles non english searches (*)
  3ffa7dc... Trivial code cleanup (*)
  0f4eda5... Make ImapDb.GC's ref to the database strong (*)
  56e0fb7... Make search update process optional when ImapDB.Account ope (*)
  bed4185... Keep meson test logs in GitLab CI for Fedora and Ubunut bui (*)
  7b124ab... Fix engine test failure under flatpak (*)
  86465bf... Merge branch 'wip/composer-folks' into 'mainline'

(*) This commit already existed in another branch; no separate mail sent