[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:

  033e539... coverage: Build gidl-bindings
  41bdf5e... ci: Add .gitlab-ci.yml
  0cd6f76... ci: Add ubuntu:16.04 run with gcc
  8317084... ci: Add archlinux:latest run with gcc
  b81d30f... ci: Add alpine:edge run with gcc
  af00f48... ci: Add fedora:rawhide run with clang
  1f6d734... Fedora rawhide is broken
  d84aba7... Ubuntu devel is broken
  d43fea5... Alpine edge is broken
  d37cd95... ci: Build manual as pdf and html
  a8b180d... ci: Always deploy

Commits added to the branch:

  59e5d31... tests: Add invalid "target/destroy access" tests to increas (*)
  9e336f2... tests: Add "instance access to implicit to_string() method  (*)
  b9f84ef... coverage: Build gidl-bindings
  80a5646... ci: Add .gitlab-ci.yml
  faea7f7... ci: Add ubuntu:16.04 run with gcc
  28a843b... ci: Add archlinux:latest run with gcc
  5db6b4d... ci: Add alpine:edge run with gcc
  1c7af22... ci: Add fedora:rawhide run with clang
  73b33d7... Fedora rawhide is broken
  3d08bb0... Ubuntu devel is broken
  a0c2a23... Alpine edge is broken
  9d580c1... ci: Build manual as pdf and html
  f4aade7... ci: Always deploy

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