News in 3.99.1
--------------

This is an intermediate version towards GtkSourceView 4.0. GtkSourceView 4.0
will still depend on GTK+ 3, and will be released in March 2017.

* All the deprecated APIs have been removed.
* Only <gtksourceview/gtksource.h> can be included directly. There were already
  warnings about it in GtkSourceView 3. The warnings have been changed to
  errors.
* Only the version 2 of the GtkSourceView language definition file format is
  supported (for *.lang files, used for syntax highlighting). The support for
  the version 1 has been dropped.
* Add padding for future expansion in the Class structures.
* Docs: add an intro with the pkg-config name.
* Docs: write the first steps of the GtkSourceView 3 -> 4 porting guide.
* Build fixes on Windows.
* Improvements to the syntax highlighting of: JavaScript and PHP
* Translation updates