[geary] (6 commits) Non-fast-forward update to branch wip/spellcheck-subject

[Michael Gratton <mjog src gnome org>]

The branch 'wip/spellcheck-subject' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  c648d9c... Fix valadoc issues
  d1cfd19... Fix valac warning
  c877733... Add Gspell to dependencies and the build
  1628040... Add support for spell checking the subject line

Commits added to the branch:

  d56aa10... Fix valadoc issues (*)
  3fb74e6... Fix valac warning (*)
  0eb9fdb... Merge branch 'wip/fix-warnings' into 'mainline' (*)
  10af58a... Merge branch 'wip/default-spellcheck-lang' into 'mainline' (*)
  4dd0838... Add Gspell to dependencies and the build
  bb872b2... Add support for spell checking the subject line

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