Fix p from visual mode pasting over one char too many

vintage.py

@@ -765,9 +765,11 @@ def advance(self, pt):
             return pt + 1
 
     def run(self, edit, register = '"'):
-        if not self.view.has_non_empty_selection_region():
+        visual_mode = self.view.has_non_empty_selection_region()
+        if not visual_mode:
             transform_selection(self.view, lambda pt: self.advance(pt))
-        self.view.run_command('paste_from_register', {'forward': True, 'register': register})
+        self.view.run_command('paste_from_register', {'forward': not visual_mode,
+                                                      'register': register})
 
 class ViPasteLeft(sublime_plugin.TextCommand):
     # Ensure the register is picked up from g_input_state, and that it'll be