Extending wxFont API & OSX Core Text Implementation (#877)

* Switch to pure Core Text Implementation, Start extended Font API

* mac fixes

* First msw implementation

* Fixing paste error

* fixing typo

* Rearranging lines to former fallthrough order

* Blind fixes for covering new abstract methods

* Blind gtk implementations

* Fixing according to travis ..

* Removing method defined in base

* formatting adaptions

* Extending the schema definition for new weights

* fixing typo, using wxRound, other fixes according to comments

* changes according to suggestions

* fixing init order, before the init of m_info was overridden by Init()

* redo

* redo

* redo

* Cleanup

Removing obsolete code snippets, proper traces for font names

* Moving common code

Only the Get/SetNumericWeight calls should now be implemented in the native part, the ‚old‘ Get/SetWeight are common code and use the numeric counterparts.

* Updating docs

* commit wa missing changes.txt

* Doc fixes

* Full stops added

interface/wx/fontutil.h

@@ -29,19 +29,22 @@ public:
 
     void Init();
     void InitFromFont(const wxFont& font);
-    
+
     int GetPointSize() const;
+    float GetFractionalPointSize() const;
     wxSize GetPixelSize() const;
     wxFontStyle GetStyle() const;
+    int GetNumericWeight() const;
     wxFontWeight GetWeight() const;
     bool GetUnderlined() const;
     wxString GetFaceName() const;
     wxFontFamily GetFamily() const;
     wxFontEncoding GetEncoding() const;
 
-    void SetPointSize(int pointsize);
+    void SetPointSize(float pointsize);
     void SetPixelSize(const wxSize& pixelSize);
     void SetStyle(wxFontStyle style);
+    void SetNumericWeight(int weight);
     void SetWeight(wxFontWeight weight);
     void SetUnderlined(bool underlined);
     bool SetFaceName(const wxString& facename);