[gnome-builder] (15 commits) Non-fast-forward update to branch wip/chergert/session

[Christian Hergert <chergert src gnome org>]

The branch 'wip/chergert/session' 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:

  f1c847e... context: add debugging macros
  6c0e792... context: short-circuit if already unloading
  d9d7888... context: use g_steal_pointer()
  0ce4d73... context: add workbench backpointer
  af9a9b1... context: whitespace
  a29ba25... context: set workbench after restoring
  949c98e... context: keep unsaved file alive during function call
  b32593c... WIP: editor: stub out editor session addin

Commits added to the branch:

  426016e... doc: link authors (*)
  fe69848... main: ignore SIGPIPE (*)
  216fab5... context: add debugging macros (*)
  51235ce... context: short-circuit if already unloading (*)
  c9136e8... context: use g_steal_pointer() (*)
  6f67b8e... Updated Lithuanian translation (*)
  1b8161d... Update Turkish translation (*)
  3c7a30d... Update German translation (*)
  1da22fc... Update Polish translation (*)
  ec81bcd... context: add workbench backpointer
  b07fe3e... context: whitespace
  9a48359... context: set workbench after restoring
  55dbcf5... context: keep unsaved file alive during function call
  a4ff40c... WIP: editor: stub out editor session addin
  fbbec20... session: synthesize success upon missing state file

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