Vala 0.50.9
===========
 * Various improvements and bug fixes:
  - codegen:
    + GArray, GByteArray and GPtrArray are reference counted
    + Replace wrongly hard coded usage of G_OBJECT_GET_CLASS
    + Mark entry point method implementation "_vala_main" as static
    + Improve check for GLib.Source derived classes
  - vala: Parameter following params-array parameter is not allowed

 * Bindings:
  - glib-2.0: Add missing has_typedef attributes on SourceFuncs delegates
  - pango: Mark language parameter of AttrIterator.get_font() as out