[vala] Created tag 0.48.6

[Rico Tzschichholz <ricotz src gnome org>]

The signed tag '0.48.6' was created.

Tagger: Rico Tzschichholz <ricotz ubuntu com>
Date: 1589804812 +0200

    0.48.6

Changes since the last tag '0.48.5':

Rico Tzschichholz (17):
      gitignore: Update and add some IDE files
      vala: Allow node_reference being null in SemanticAnalyzer.get_instance_base_type()
      vala: SemanticAnalyzer.get_instance_base_type() is not allowed to return null
      vala: params-array parameter is not allowed in abstract/virtual method
      valadoc: Add implicit "Posix" using-directive for POSIX profile
      vala: Use stable hash for methods in HashMap of implicit_implementations
      parser: Use [Flags] for ModifierFlags
      Use "str_equal" as equal_func for ArrayList<string> instances
      vala: Set value_type of undefined member-access to avoid further criticals
      codegen: Correctly handle cast-expression of real struct to nullable struct
      vala: Transform cast from floating-type to boxed-type
      vala: Transform cast from integer-type to boxed-type
      codegen: Use loop index instead of get_ccode_pos() for ellipsis parameter
      vala: Explicit "new" method may be incompatible with a posssible base method
      girparser: Add support for boolean "new" argument for methods
      gtk4: Update to 3.98.3+028942c8
      Release 0.48.6