[libgee] (9 commits) Non-fast-forward update to branch wip/tintou/meson

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/tintou/meson' 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:

  8139e4a... Use Meson build system

Commits added to the branch:

  5e66324... Release 0.20.2 (*)
  505698a... Fix "Access to possible `null'" warnings and use unsafe cas (*)
  35226d9... Guard GLib.Cond.wait/wait_until calls against spurious or s (*)
  2b646cc... Flatten call structure a bit (*)
  56b10bc... Release 0.20.3 (*)
  8b76b8c... Various English and typo fixes in the documentation (*)
  63d2b88... Replace Memory.dup() with GLib.malloc() and Memory.copy() (*)
  2ba2faf... Remove invalid usage of type-argument for Gee.Future.Source (*)
  6f973d9... Use Meson build system

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