Vala 0.38.6
===========
 * Various bug fixes:
  - girparser:
    + Set NoAccessorMethod for non-readable and construct-only properties
    + Ignore conflicting closure/destroy indexes
    + Don't accept methods as property-accessor which throw errors [#792998]
  - codegen:
    + Infer error parameter from abstract/virtual base methods [#614294]
    + Fix return-type for cancelled async creation methods of classes [#792942]
  - vala: Variadic constructors without a real first parameter are not allowed
  - libvaladoc: Keep bootstrap-support with valac >= 0.16.1

 * Bindings:
  - gstreamer-1.0: Update from 1.13+ git master
  - gtk+-4.0: Only override type of "event" parameters