[gtkmm-documentation] (8 commits) Non-fast-forward update to branch wip/dboles/formatting-3

[Daniel Boles <dboles src gnome org>]

The branch 'wip/dboles/formatting-3' 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:

  4b1cdac... Improve/add tags, use projects’ preferred capn, &c
  2839919... Update an out-of-date reference to a minor version
  95ab834... Update some comments about deprecations
  2423046... Replace uses of "derivation" with "inheritance"
  db351c1... Replace some uses of " quotes with XML tags
  9192df2... Replace typewriter quotes with curly UTF-8 quotes
  fa65c9b... Replace typewriter hyphens with en dashes

Commits added to the branch:

  2c491a3... Improve/add tags, use projects’ preferred capn, &c
  fe8e37e... Update an out-of-date reference to a minor version
  90c081c... Update some comments about deprecations
  a1f2561... Improve gtkmm 3 intro re # of changes from gtkmm 2
  561d626... Replace uses of "derivation" with "inheritance"
  3d5f8ec... Replace some uses of " quotes with XML tags
  1347e66... Replace typewriter quotes with curly UTF-8 quotes
  53808aa... Replace typewriter hyphens with en dashes