[vala] (13 commits) Non-fast-forward update to branch wip/ci

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/ci' 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:

  9836967... coverage: Build gidl-bindings
  1128e66... ci: Add .gitlab-ci.yml
  a239c0b... ci: Add ubuntu:16.04 run with gcc
  6a2e5ca... ci: Add ubuntu:18.04 run with gcc
  cd245b0... ci: Add fedora:latest run with clang
  68c0b4a... ci: Add archlinux/base:latest run with gcc
  19e5b35... ci: Always deploy

Commits added to the branch:

  774f69b... valadoc/tests: Use type for property which is compatible wi (*)
  278797a... libvaladoc: Fix parameter and property ownership declaratio (*)
  c3b972e... libvaladoc: Drop unused code (*)
  743e8f9... libvaladoc: Remove TypeReference.pass_ownership API (*)
  5024c64... glib-2.0: Guard against passing null source to GLib.Memory. (*)
  05a7609... Sync NEWS from 0.46 (*)
  6b7de91... coverage: Build gidl-bindings
  3f1ae43... ci: Add .gitlab-ci.yml
  0d3f4f7... ci: Add ubuntu:16.04 run with gcc
  12f12b7... ci: Add ubuntu:18.04 run with gcc
  d60baf6... ci: Add fedora:latest run with clang
  a5db714... ci: Add archlinux/base:latest run with gcc
  3641a5c... ci: Always deploy

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