Merge branch 'master' into 4.x-maintenance

CHANGES.md

@@ -1,11 +1,14 @@
 Version 4.3
 -----------
 
-Minor release, unreleased
+Minor release, released 1 May 2018
 
 - Added new option `--mode [pedantic|debug]`. In pedantic mode Yasha
   becomes extremely picky on templates, e.g. undefined variables will
   raise an error. In debug mode undefined variables will print as is.
+- [Jinja's default configurations](https://github.com/pallets/jinja/blob/master/jinja2/defaults.py)
+  can be set in file extensions. This allows changing the template
+  syntax to mimic LaTeX, for example.
 
 Version 4.2
 -----------