[pango/matthiasc/for-main] (25 commits) ...pango-view: Fix display of char extents

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  3eae717... tests: Add spiced up wrapping tests (*)
  67c7ec6... Rewrite process_item (*)
  42767fe... Fix a small memleak (*)
  1b745e7... Another small leak fix (*)
  7c3b613... Cosmetics (*)
  c8b2c31... ci: Don't run testrandom on macOs (*)
  05ea7f4... Correct the extra_width accounting (*)
  82cea29... Fix a thinko in zero_line_final_space (*)
  7c33785... Merge branch 'matthiasc/for-main' into 'main' (*)
  9278c4f... Merge branch 'rewrite-line-breaking' into 'main' (*)
  c58dfbf... Add pango_attr_list_to/from_string (*)
  08868a8... tests: Reuse attribute serialization code (*)
  09996f6... Use serialization api in testattributes (*)
  b892330... Add pango_tab_array_to/from_string (*)
  1d800b3... Merge branch 'serialize-attrs-and-tabs' into 'main' (*)
  2c0f7e3... Neuter g_debug in line-breaking (*)
  9730027... Merge branch 'take-out-gdebug' into 'main' (*)
  2f2cb72... ci: Add json-glib to the image (*)
  2aead7a... Add layout serialization api (*)
  4d60ee8... Make test-layout use layout serialization (*)
  70dd77e... Improve valgrind suppressions (*)
  43f7899... Add a json-glib subproject (*)
  f82c7d1... Merge branch 'serializer2' into 'main' (*)
  497be71... Tweak word and sentence attributes
  5087dc4... pango-view: Fix display of char extents

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