[gtksourceview] (75 commits) Non-fast-forward update to branch wip/new-space-drawing-api

[Sébastien Wilmet <swilmet src gnome org>]

The branch 'wip/new-space-drawing-api' 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:

  888f0de... New API to draw whitespaces, with two enums (space types vs

Commits added to the branch:

  380b6c4... Add Language headers to po files (*)
  8568dab... view: update style on ::style-updated, not ::realize (*)
  0be312b... view: small code improvements in style_updated() (*)
  0c56c54... docs: s/default-regex-opts/default-regex-options/ (*)
  c873fa3... latex.lang: remove "name" style (*)
  b0165a4... latex.lang: better support of no-spell-check in specific-co (*)
  ba41910... latex.lang: simplify specific-commands (*)
  db21302... latex.lang: better support of no-spell-check for include co (*)
  db904b8... latex.lang: do not spell-check code inside lstlisting or ls (*)
  e15f19d... view: simplify code for applying the StyleScheme to the vie (*)
  96e6978... build: small improvements in Makefile.am files (*)
  d166300... build: add more flags to AM_DISTCHECK_CONFIGURE_FLAGS (*)
  4c6854c... Use a DSO constructor to init i18n (*)
  f34a363... i18n: remove "translator-credits" string (*)
  acaaebb... i18n: simplify gtksourceview-i18n (*)
  a4f6282... Use AX_VALGRIND_CHECK (*)
  6c660e8... LanguageManager: better #includes (*)
  e761de9... Use a DSO destructor (*)
  22cc18d... testsuite: use walbottle.supp for Valgrind suppression file (*)
  a7ada1d... Updated Bulgarian translation (*)
  8921f8d... Updated Slovak translation (*)
  15a7191... Updated Hebrew translation (*)
  fc90b8f... Update language-specs.pot (*)
  7f62b0e... region: improve doc of intersect() (*)
  04e712b... region: add functions to add/subtract/intersect two GtkSour (*)
  1657f79... Add private search-start signal (*)
  93bb09e... buffer: split update_syntax/search_highlight() (*)
  48f2b42... SearchContext: fix object leak on regex search (*)
  a89291c... SearchContext: better handle high-priority region (*)
  b972501... region: rename functions to add/subtract/intersect a subreg (*)
  f0f86a2... test-region: write real tests instead of just printing the  (*)
  5420085... test-region: add basic tests for the new functions (*)
  886a3e2... StyleSchemeChooserButton: set better height to the Scrolled (*)
  cb0931f... Release 3.21.4 (*)
  a064dcb... Post-release version bump (*)
  6945997... jade.lang: update license LGPLv2+ -> LGPLv2.1+ and fix FSF  (*)
  a1fc07b... Updated Lithuanian translation (*)
  f701822... Updated Polish translation (*)
  ffd90fb... SpaceDrawer: group loop breaks together (*)
  d461b1b... SpaceDrawer: avoid a potential infinite loop (*)
  49dafa9... Updated Czech translation (*)
  a057a65... Release 3.21.5 (*)
  05287a2... Post-release version bump (*)
  f57fa7a... Updated Hungarian translation (*)
  3616310... css.lang: Add support for some newer CSS units / dimensions (*)
  2f149e6... css.lang: Add support for 8 and 4 digit hex color notation (*)
  517681b... Updated Slovenian translation (*)
  ca1ea67... rust.lang: Add the 'union' keyword (RFC 1444) (*)
  17f54f5... rust.lang: Add the 'default' keyword (RFC 1210) (*)
  ebe8b25... rust.lang: Move reserved keywords (*)
  a95da40... rust.lang: Fix integer suffixes (*)
  1119d20... rust.lang: Add invalid number highlighting (*)
  4aa5547... rust.lang: Add invalid char and byte highlight (*)
  35e3a07... rust.lang: Cleanup styles formatting to match other files (*)
  eca2a42... rust.lang: Add mimetype (*)
  35b8efe... rust.lang: Add more syntax highlighting tests (*)
  624897a... Updated Serbian translation (*)
  c3d617b... Updated French translation (*)
  0ec29c4... Updated Korean translation (*)
  c45a215... Updated Kazakh translation (*)
  6c7854b... Updated Swedish translation (*)
  5368c5b... Update Latvian translation (*)
  fcc6e07... Updated Galician translations (*)
  e2ea5c6... Release 3.21.6 (*)
  1a0ab00... Post-release version bump (*)
  a267ade... Add more options to XGETTEXT_OPTIONS in po/Makevars (*)
  623062a... Updated Danish translation (*)
  c43ca3c... python3: Improve syntax highlighting (*)
  546b82a... Update British English translation (*)
  aac0294... Updated Vietnamese translation (*)
  7cf7bad... Updated Greek translation (*)
  2352fd0... Release 3.22.0 (*)
  2e2e5c6... Post-release version bump (*)
  2a9230e... Update Basque language (*)
  adc78c3... New API to draw whitespaces, with two enums (space types vs

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