[vala] (17 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:

  22c9443... coverage: Build gidl-bindings
  b5e25d9... ci: Add .gitlab-ci.yml
  d6f802c... ci: Add ubuntu:16.04 run with gcc
  6de68c8... ci: Add archlinux:latest run with gcc
  1e53db2... ci: Add alpine:edge run with gcc
  0f5c94b... ci: Add fedora:rawhide run with clang
  0691dd4... Ubuntu devel is broken
  fc30269... ci: Use Fedora 34 (broken DBus)
  56cc070... ci: Build manual as pdf and html
  fda0c38... ci: Always deploy

Commits added to the branch:

  48d5de2... tiff: Fix a few binding errors (*)
  f74da85... SDL2_ttf: Fix a few binding errors (*)
  7b531ec... codegen: Drop confusing warning when accessing interface me (*)
  95d1ecb... libarchive: Fix a few binding errors (*)
  a186a49... vapi: Add webkit2gtk-4.1 bindings (*)
  e6f675d... Release 0.56.0 (*)
  044622a... Add release notes for 0.56 (*)
  c313f76... coverage: Build gidl-bindings
  8a125ff... ci: Add .gitlab-ci.yml
  4b6194b... ci: Add ubuntu:16.04 run with gcc
  b6d6d35... ci: Add archlinux:latest run with gcc
  bc82149... ci: Add alpine:edge run with gcc
  dc5c569... ci: Add fedora:rawhide run with clang
  139cb7b... Ubuntu devel is broken
  e1fabca... ci: Use Fedora 34 (broken DBus)
  9a2ff35... ci: Build manual as pdf and html
  746e6d3... ci: Always deploy

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