[gtk] (21 commits) Non-fast-forward update to branch wip/chergert/textundo

[Christian Hergert <chergert src gnome org>]

The branch 'wip/chergert/textundo' 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:

  f4d4235... wip on text undo

Commits added to the branch:

  41c52e9... Bump the pango dependency (*)
  eaa6301... Port the font chooser to just use harfbuzz (*)
  4a2f313... gtk-demo: Use harfbuzz for font features (*)
  fa8ce17... build: We no longer need freetype (*)
  8ccf2a7... gsk: Stop using deprecated pango api (*)
  de29c3e... label: Handle insert_hyphens pango attribute (*)
  828b582... label: Handle new pango attributes (*)
  2889844... Merge branch 'bump-pango' into 'master' (*)
  22bb1bd... reftests: Drop libtool hack (*)
  34d0021... reftests: Print out a helpful error (*)
  5f627a2... Merge branch 'reftest-fixes' into 'master' (*)
  6d16f7a... textview: use g_slice_new0 for proper initial state (*)
  7cfda4e... texthistory: add GtkTextHistory helper
  c28e0ff... textview: add undo/redo support to GtkTextView
  62c6ce1... entrybuffer: remove text in ::deleted-text default handler
  3df14a6... text: add undo support to GtkText
  80dd67a... entry: allow disabling undo for GtkEntry
  7cf1a19... gtk-demo: wrap text operations in irreversible actions
  dee14c3... gtk-demo: add an undo demo for GtkEntry
  1664338... gtk-demo: add a demo for TextView undo/redo
  b953892... gtk-demo: set irreversable actions for textview demos

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